Document and Entity Information
v6.14.0.7
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2016
Mar. 22, 2017
Jun. 30, 2016
Document and Entity Information [Abstract]      
Entity Registrant Name ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/    
Entity Central Index Key 0000819689    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Company    
Document Type 10-K    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   2,820,999dei_EntityCommonStockSharesOutstanding  
Entity Public Float     $ 17,660,327dei_EntityPublicFloat
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    

Consolidated Balance Sheets
v6.14.0.7
Consolidated Balance Sheets (USD $)
Dec. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 380,381us-gaap_CashAndCashEquivalentsAtCarryingValue $ 272,291us-gaap_CashAndCashEquivalentsAtCarryingValue
Trade accounts receivable, net of allowance for doubtful accounts of $30,000 at December 31, 2016 and $60,000 at December 31, 2015 2,276,608us-gaap_AccountsReceivableNetCurrent 2,798,353us-gaap_AccountsReceivableNetCurrent
Inventories 3,060,085us-gaap_InventoryNet 2,118,712us-gaap_InventoryNet
Prepaid expenses and other current assets 614,362us-gaap_PrepaidExpenseAndOtherAssetsCurrent 593,716us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 6,331,436us-gaap_AssetsCurrent 5,783,072us-gaap_AssetsCurrent
Property, plant and equipment, net 6,440,911us-gaap_PropertyPlantAndEquipmentNet 6,626,069us-gaap_PropertyPlantAndEquipmentNet
Assets held for sale, net 688,750us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup 665,000us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup
Intangible assets, net 30,093us-gaap_IntangibleAssetsNetExcludingGoodwill 18,645us-gaap_IntangibleAssetsNetExcludingGoodwill
Other assets 156,231us-gaap_OtherAssetsNoncurrent 243,319us-gaap_OtherAssetsNoncurrent
Total assets 13,647,421us-gaap_Assets 13,336,105us-gaap_Assets
Current liabilities:    
Revolving line of credit, current portion 1,785,795hrt_RevolvingLineOfCreditCurrentPortion 0hrt_RevolvingLineOfCreditCurrentPortion
Equipment line of credit, current portion 102,500hrt_EquipmentLineOfCreditCurrentPortionDue 35,718hrt_EquipmentLineOfCreditCurrentPortionDue
Term notes payable, current portion, net of debt issuance costs 487,468hrt_TermNotesPayableCurrentPortion 589,635hrt_TermNotesPayableCurrentPortion
Subordinated promissory notes, net of discount 0us-gaap_SubordinatedDebtCurrent 473,135us-gaap_SubordinatedDebtCurrent
Accounts payable 1,744,261us-gaap_AccountsPayableCurrent 1,553,388us-gaap_AccountsPayableCurrent
Accrued expenses and other current liabilities 333,361us-gaap_OtherLiabilitiesCurrent 275,777us-gaap_OtherLiabilitiesCurrent
Customer deposits 122,290us-gaap_CustomerDepositsCurrent 93,407us-gaap_CustomerDepositsCurrent
Deferred revenue, current 224,988us-gaap_DeferredRevenueCurrent 272,837us-gaap_DeferredRevenueCurrent
Total current liabilities 4,800,663us-gaap_LiabilitiesCurrent 3,293,897us-gaap_LiabilitiesCurrent
Long-term liabilities:    
Revolving line of credit, non-current portion 0us-gaap_LongTermLineOfCredit 1,511,495us-gaap_LongTermLineOfCredit
Equipment line of credit, non-current portion 0hrt_EquipmentLineOfCreditNetOfCurrentPortion 301,132hrt_EquipmentLineOfCreditNetOfCurrentPortion
Term notes payable, non-current portion, net of debt issuance costs 1,970,863hrt_TermNotesPayableNonCurrentPortion 1,074,723hrt_TermNotesPayableNonCurrentPortion
Subordinated promissory notes, net of discount 432,011us-gaap_SubordinatedLongTermDebt 0us-gaap_SubordinatedLongTermDebt
Deferred revenue, non-current 156,953us-gaap_DeferredRevenueNoncurrent 272,181us-gaap_DeferredRevenueNoncurrent
Total long-term liabilities 2,559,827us-gaap_LiabilitiesNoncurrent 3,159,531us-gaap_LiabilitiesNoncurrent
Total liabilities 7,360,490us-gaap_Liabilities 6,453,428us-gaap_Liabilities
Commitments and Contingencies      
Shareholders' equity:    
Preferred stock, $0.001 par value; 2,000,000 shares authorized, none issued 0us-gaap_PreferredStockValue 0us-gaap_PreferredStockValue
Common stock, $0.01 par value; 10,000,000 shares authorized; 3,926,491 issued, 2,820,999 outstanding at December 31, 2016 and 3,926,491 issued, 2,801,639 outstanding at December 31, 2015 39,265us-gaap_CommonStockValue 39,265us-gaap_CommonStockValue
Additional paid-in-capital 11,457,320us-gaap_AdditionalPaidInCapital 11,381,536us-gaap_AdditionalPaidInCapital
Treasury stock at cost, 1,105,492 shares at December 31, 2016 and 1,124,852 shares at December 31, 2015 (3,028,564)us-gaap_TreasuryStockValue (3,069,496)us-gaap_TreasuryStockValue
Accumulated deficit (2,181,090)us-gaap_RetainedEarningsAccumulatedDeficit (1,468,628)us-gaap_RetainedEarningsAccumulatedDeficit
Total shareholders’ equity 6,286,931us-gaap_StockholdersEquity 6,882,677us-gaap_StockholdersEquity
Total liabilities and shareholders’ equity $ 13,647,421us-gaap_LiabilitiesAndStockholdersEquity $ 13,336,105us-gaap_LiabilitiesAndStockholdersEquity

Consolidated Balance Sheets (Parenthetical)
v6.14.0.7
Consolidated Balance Sheets (Parenthetical) (USD $)
Dec. 31, 2016
Dec. 31, 2015
Consolidated Balance Sheets [Abstract]    
Allowance for doubtful accounts receivable, current $ 30,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 60,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Preferred stock, par value per share $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 2,000,000us-gaap_PreferredStockSharesAuthorized 2,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Common stock, par value per share $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 10,000,000us-gaap_CommonStockSharesAuthorized 10,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 3,926,491us-gaap_CommonStockSharesIssued 3,926,491us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 2,820,999us-gaap_CommonStockSharesOutstanding 2,801,639us-gaap_CommonStockSharesOutstanding
Treasury stock, shares 1,105,492us-gaap_TreasuryStockShares 1,124,852us-gaap_TreasuryStockShares

Consolidated Statements of Operations and Comprehensive Loss
v6.14.0.7
Consolidated Statements of Operations and Comprehensive Loss (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Consolidated Statements of Operations and Comprehensive Loss [Abstract]    
Net sales $ 19,638,217us-gaap_SalesRevenueNet $ 21,495,184us-gaap_SalesRevenueNet
Cost of sales 16,739,526us-gaap_CostOfGoodsAndServicesSold 18,332,346us-gaap_CostOfGoodsAndServicesSold
Gross profit 2,898,691us-gaap_GrossProfit 3,162,838us-gaap_GrossProfit
Selling and marketing 1,153,044us-gaap_SellingAndMarketingExpense 1,086,586us-gaap_SellingAndMarketingExpense
General and administrative 2,151,244us-gaap_GeneralAndAdministrativeExpense 2,355,484us-gaap_GeneralAndAdministrativeExpense
Research and development 97,234us-gaap_ResearchAndDevelopmentExpense 241,100us-gaap_ResearchAndDevelopmentExpense
Total operating expenses 3,401,522us-gaap_OperatingExpenses 3,683,170us-gaap_OperatingExpenses
Net loss from continuing operations (502,831)us-gaap_OperatingIncomeLoss (520,332)us-gaap_OperatingIncomeLoss
Other expense:    
Interest expense (259,762)us-gaap_InterestExpense (260,300)us-gaap_InterestExpense
Other income (expense), net 50,131us-gaap_OtherNonoperatingIncomeExpense (10,212)us-gaap_OtherNonoperatingIncomeExpense
Total other expense, net (209,631)hrt_OtherExpenseNet (270,512)hrt_OtherExpenseNet
Loss from continuing operations before income taxes (712,462)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (790,844)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax provision   932us-gaap_IncomeTaxExpenseBenefit
Loss from continuing operations (712,462)us-gaap_IncomeLossFromContinuingOperations (791,776)us-gaap_IncomeLossFromContinuingOperations
Discontinued Operations:    
Income from discontinued operations, net of tax provision of $0 for the years ended December 31, 2016 and 2015 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 362,610us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net loss (712,462)us-gaap_NetIncomeLoss (429,166)us-gaap_NetIncomeLoss
Other comprehensive loss:    
Reclassification of gains from foreign currency translation   (42,502)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Comprehensive loss $ (712,462)us-gaap_ComprehensiveIncomeNetOfTax $ (471,668)us-gaap_ComprehensiveIncomeNetOfTax
Earnings (loss) per share - basic    
Continuing operations $ (0.25)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare $ (0.28)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Discontinued operations $ 0.00us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare $ 0.13us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
Earnings (loss) per share - basic $ (0.25)us-gaap_EarningsPerShareBasic $ (0.15)us-gaap_EarningsPerShareBasic
Earnings (loss) per share - diluted    
Continuing operations $ (0.25)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.28)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Discontinued operations $ 0.00us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare $ 0.13us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
Earnings (loss) per share - dilutes $ (0.25)us-gaap_EarningsPerShareDiluted $ (0.15)us-gaap_EarningsPerShareDiluted
Weighted average common shares outstanding - basic 2,816,516us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 2,784,757us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Weighted average common shares outstanding - diluted 2,816,516us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 2,784,757us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

Consolidated Statements of Operations and Comprehensive Loss (Parenthetical)
v6.14.0.7
Consolidated Statements of Operations and Comprehensive Loss (Parenthetical) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Consolidated Statements of Operations and Comprehensive Loss [Abstract]    
Tax provision, discontinued operations $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation

Consolidated Statements of Changes in Shareholders' Equity
v6.14.0.7
Consolidated Statements of Changes in Shareholders' Equity (USD $)
Common Stock [Member]
Additional paid-in capital [Member]
Treasury stock [Member]
Accumulated other comprehensive income [Member]
Accumulated deficit [Member]
Total
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2014 $ 39,265us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 11,336,693us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (3,133,883)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
$ 42,502us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
$ (1,039,462)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 7,245,115us-gaap_StockholdersEquity
Shares, Outstanding, Beginning Balance at Dec. 31, 2014 3,926,491us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
  1,148,152us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
     
Accumulated comprehensive income from unrealized gains and losses in currency translation   (51)hrt_AccumulatedComprehensiveIncomeFromUnrealizedGainsAndLossesInCurrencyTranslation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  (42,502)hrt_AccumulatedComprehensiveIncomeFromUnrealizedGainsAndLossesInCurrencyTranslation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
  (42,553)hrt_AccumulatedComprehensiveIncomeFromUnrealizedGainsAndLossesInCurrencyTranslation
Share-based compensation - options   29,178us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      29,178us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Issuance of common stock from treasury, shares     (23,300)us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    (23,300)us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
Issuance of common stock from treasury   15,716us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
64,387us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    80,103us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
Net loss         (429,166)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(429,166)us-gaap_NetIncomeLoss
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2015 39,265us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
11,381,536us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(3,069,496)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
  (1,468,628)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
6,882,677us-gaap_StockholdersEquity
Shares, Outstanding, Ending Balance at Dec. 31, 2015 3,926,491us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
  1,124,852us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
     
Share-based compensation - options   47,256us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      47,256us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Change in the incremental fair value of warrants   18,310us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      18,310us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket
Issuance of common stock from treasury, shares     (15,000)us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    (15,000)us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
Issuance of common stock from treasury   10,218us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
40,932us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    51,150us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
Net loss         (712,462)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(712,462)us-gaap_NetIncomeLoss
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2016 $ 39,265us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 11,457,320us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (3,028,564)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
  $ (2,181,090)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 6,286,931us-gaap_StockholdersEquity
Shares, Outstanding, Ending Balance at Dec. 31, 2016 3,926,491us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
  1,109,852us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
     

Consolidated Statements of Cash Flows
v6.14.0.7
Consolidated Statements of Cash Flows (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities:    
Net loss $ (712,462)us-gaap_NetIncomeLoss $ (429,166)us-gaap_NetIncomeLoss
Income from discontinued operations 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (362,610)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Loss on sale of property, plant and equipment 0us-gaap_GainLossOnSaleOfPropertyPlantEquipment 13,320us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Change in fair value of assets held for sale (23,750)hrt_ChangeInFairValueOfAssetsHeldForSale 0hrt_ChangeInFairValueOfAssetsHeldForSale
Depreciation and amortization 1,541,006us-gaap_DepreciationDepletionAndAmortization 1,464,588us-gaap_DepreciationDepletionAndAmortization
Impairment of intangibles 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived 118,318us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Non-cash interest expense 27,186hrt_NonCashInterestExpense 27,683hrt_NonCashInterestExpense
Change in allowance for doubtful accounts (30,000)us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease 15,000us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Share-based compensation expense 47,256us-gaap_ShareBasedCompensation 29,178us-gaap_ShareBasedCompensation
Changes in operating assets and liabilities:    
Accounts receivable 551,745us-gaap_IncreaseDecreaseInAccountsReceivable 723,394us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories (941,373)us-gaap_IncreaseDecreaseInInventories 395,529us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets (25,228)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (94,547)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Other non-current assets 112,604us-gaap_IncreaseDecreaseInOtherNoncurrentAssets 301,522us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Accounts payable 190,873us-gaap_IncreaseDecreaseInAccountsPayable (303,768)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses and other current liabilities 38,618us-gaap_IncreaseDecreaseInAccruedLiabilities (90,426)us-gaap_IncreaseDecreaseInAccruedLiabilities
Other non-current liabilities (115,228)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities (338,249)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Net cash provided by (used in) operating activities 661,247us-gaap_NetCashProvidedByUsedInOperatingActivities 1,469,766us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities:    
Purchases of property, plant and equipment (1,354,091)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (1,182,541)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from sale of property, plant and equipment 0us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 35,700us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Cash paid for patents and trademarks (13,205)hrt_CashPaidForPatentsAndTrademarks (6,176)hrt_CashPaidForPatentsAndTrademarks
Net cash provided by (used in) investing activities (1,367,296)us-gaap_NetCashProvidedByUsedInInvestingActivities (1,153,017)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities:    
Proceeds from (payments on) revolving line of credit, net 274,300hrt_ProceedsFromPaymentsOnRevolvingLineOfCreditNet (560,000)hrt_ProceedsFromPaymentsOnRevolvingLineOfCreditNet
Proceeds from equipment line of credit 647,351hrt_ProceedsFromEquipmentLineOfCredit 752,635hrt_ProceedsFromEquipmentLineOfCredit
Proceeds from term note payable 500,000hrt_ProceedsFromTermNotesPayable 0hrt_ProceedsFromTermNotesPayable
Payments on term notes payable (587,799)us-gaap_RepaymentsOfMediumTermNotes (526,594)us-gaap_RepaymentsOfMediumTermNotes
Payment of debt issuance costs (20,863)us-gaap_PaymentsOfDebtIssuanceCosts 0us-gaap_PaymentsOfDebtIssuanceCosts
Payment on subordinated debt (50,000)us-gaap_RepaymentsOfSubordinatedDebt 0us-gaap_RepaymentsOfSubordinatedDebt
Proceeds from stock option exercises 51,150us-gaap_ProceedsFromStockOptionsExercised 80,103us-gaap_ProceedsFromStockOptionsExercised
Net cash provided by (used in) financing activities 814,139us-gaap_NetCashProvidedByUsedInFinancingActivities (253,856)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents 108,090us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 62,893us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period 272,291us-gaap_Cash 209,398us-gaap_Cash
Cash and cash equivalents, end of period 380,381us-gaap_Cash 272,291us-gaap_Cash
Supplemental Cash Flow Information    
Cash paid for interest 233,330us-gaap_InterestPaid 222,237us-gaap_InterestPaid
Non-cash activities:    
Reclassified assets held for sale 0hrt_ReclassifiedAssetsHeldForSale 665,000hrt_ReclassifiedAssetsHeldForSale
Change in incremental value of warrants 18,310hrt_ChangeInIncrementalValueOfWarrants  
Non-cash payoff of revolver as part of refinancing 500,000hrt_NonCashPayoffOfRevolverAsPartOfRefinancing  
Non-cash payoff of notes as part of refinancing 457,828hrt_NonCashPayoffOfNotesAsPartOfRefinancing  
Equipment line of credit converted to term notes payable $ 1,524,115hrt_EquipmentLineOfCreditConvertedToTermNotesPayable $ 415,785hrt_EquipmentLineOfCreditConvertedToTermNotesPayable

Description of Business
v6.14.0.7
Description of Business
12 Months Ended
Dec. 31, 2016
Description of Business [Abstract]  
Description of Business

1.  Description of Business



Arrhythmia Research Technology®, Inc., (“ART”), through its wholly-owned subsidiary, Micron Products®, Inc. ("Micron", and collectively with ART, the "Company") is a diversified contract manufacturing organization (“CMO”)  that produces highly-engineered, innovative components requiring precision machining and thermoplastic injection molding. The Company also manufactures components, devices and equipment for military, law enforcement, automotive and consumer products applications.  The Company's capabilities include the production and sale of silver/silver chloride coated and conductive resin sensors used as consumable component parts in the manufacture of integrated disposable electrophysiological sensors.  The Company’s machining operations produce quick-turn, high volume and patient-specific orthopedic implant components and instruments.  The Company also has custom thermoplastic injection molding capabilities as well as a full array of design, engineering, production services and management.  The Company competes globally, with nearly forty percent of its revenue derived from exports.



The Company’s shares have traded on the NYSE MKT since 1992 under the symbol HRT.  The Company has grown organically and through acquisitions. Today, the Company has diversified manufacturing capabilities with the capacity to participate in full product life-cycle activities from early stage development and engineering and prototyping to full scale manufacturing as well as packaging and product fulfillment services.

 

The Company's subsidiary, RMDDxUSA Corp. and its Prince Edward Island subsidiary RMDDx Corporation (collectively "WirelessDx"), discontinued operations in 2012, filed for relief under Chapter 7 (Liquidation) of the United States Bankruptcy Code in May 2014 and in March 2015, the Chapter 7 Order was formally discharged and the case was closed (see Note 12).



Operating matters and liquidity



The revolver under the Company's credit facility has a maturity date of June 2017 (see Note 5). At December 31, 2016, the outstanding balance on the revolver was $1,785,795.  The Company believes that cash flows from its operations, together with its existing working capital, increased booked orders, the renewal of the revolver and other resources, will be sufficient to fund operations at current levels and repay debt obligations over the next twelve months and beyond; however, there can be no assurance that the Company will be able to do so.



Assessment of going concern



In 2016, the Company adopted new accounting standard ASU No. 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”.  The new accounting standard requires management to evaluate whether there are conditions that give rise to substantial doubt as to the Company’s ability to continue as a going concern within one year from the date of issuance of these financial statements.  Substantial doubt exists when conditions and events, considered in the aggregate, indicate that it is probable that a company will be unable to meet its obligations as they become due within one year after the financial statement issuance date.  Management evaluations include identifying relevant conditions and events that were known and reasonably knowable as of the date these financial statements have been issued. 



The Company identified certain conditions and events which in the aggregate required management to perform an assessment of the Company’s ability to continue as a going concern.  These conditions include the Company’s ability to renew the revolver which matures in June 2017, negative financial history and the Company’s limited liquidity to meet the working capital needs to support the Company’s operations.



Management’s assessment included an analysis of the Company’s financial forecasts.  Management’s assessment also considered the Company’s history of meeting financial covenants and being able to renew and refinance its debt obligations.  Based on the anticipated renewal of the Company’s revolver, cash forecasts, expected fulfillment of booked orders from existing customers, new customer prospects, and the closing on the sale of certain real estate held for sale, the Company expects to continue to meet its financial covenants and its obligations for the next year. 

 


Accounting Policies
v6.14.0.7
Accounting Policies
12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Accounting Policies

2.  Accounting Policies



Principles of consolidation



The consolidated financial statements (the "financial statements") include the accounts of ART, Micron and WirelessDx. WirelessDx is presented herein as discontinued operations. All intercompany balances and transactions have been eliminated in consolidation.



Use of estimates



The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods.  Actual results could differ from those estimates.



Revenue recognition



Revenue is recorded when all criteria for revenue recognition have been satisfied.  Revenue is recognized in the period when persuasive evidence of an arrangement with a customer exists, the products are shipped and title has transferred or when exclusive control has been transferred to the customer,  the price is fixed or determinable and collection is probable.  The Company has entered into supply agreements with certain foreign customers where revenue is not recognized when the product is shipped but instead is recognized when the customer consumes the product. 



The Company enters into arrangements containing multiple elements which may include a combination of the sale of molds, tooling, engineering and validation services ("tooling") and production units. The Company has determined that certain engineering and tooling arrangements, and the related production units, represent one unit of accounting, based on an assessment of the respective standalone value. When the Company determines that an arrangement represents one unit of accounting, the revenue is deferred over the estimated product life-cycle, based upon historical knowledge of the customer, which is generally one to three years. The Company carries the sales and tooling costs, associated with the related arrangement, as deferred revenue and other current and non-current assets, respectively, on the Company's balance sheet. As the deferred revenue is amortized to sales over the product lifecycle, the associated prepaid tooling costs are amortized to cost of sales.



The Company cannot effectively predict short-term or long-term production volume in a consistent and meaningful manner, due to the nature of these molds and associated products. Therefore, the Company is unable to account for the transactions under the Units of Production method and management has determined the most appropriate amortization method to be the Straight-Line method.



The Company may from time to time, at the customer's request, enter into a bill and hold arrangement. The Company evaluates the nature of the arrangement including, but not limited to (i) the customer's business purpose, (ii) the transfer of risk of ownership to the customer and (iii) the segregation of inventory, along with other elements in accordance with relevant accounting guidance to determine the appropriate method of revenue recognition for each arrangement.



Revenue for software license sales is recognized when licenses are sold as the revenue cycle is completed with no warranty, returns or technical support to customers. Total revenue from software sales was immaterial in relation to consolidated revenues.



Fair value of financial instruments



The carrying amount reported in the balance sheets for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value due to the immediate or short-term nature of such instruments. The carrying value of debt approximates fair value since it provides for market terms and interest rates.



Concentration of credit risk



Financial instruments which potentially expose the Company to concentrations of credit risk consist primarily of accounts receivable and cash and cash equivalents. It is the Company’s policy to place its cash in high quality financial institutions. The Company does not believe significant credit risk exists above federally insured limits with respect to these institutions.



Accounts receivable are customer obligations due under normal trade terms. A large portion of the Company's products are sold to large diversified medical, military and law enforcement product manufacturers. The Company does not generally require collateral for its sales; however, the Company believes that its terms of sale provide adequate protection against credit risk.    While the Company has a strong record of collecting on its receivables, the Company maintains Accounts Receivables insurance in order to mitigate concentration of credit risk where our top five customers in revenue constituted 46% of the Accounts Receivables at December 31, 2016 as compared to 51% at December 31, 2015.



During the year ended December 31, 2016, the Company had net sales to two customers constituting 19% and 12% of total 2016 net sales. Accounts receivable from these two customers at December 31, 2016 was 26% and 7%, respectively,  of the total accounts receivable balance at year end. During the year ended December 31, 2015, the Company had net sales to two customers constituting 16% and 13%, respectively, of total 2015 net sales. Accounts receivable from the two customers at December 31, 2015 was 9% for each of the total accounts receivable balance at year end.



Cash and cash equivalents



Cash and cash equivalents consist of cash on hand and on deposit in high quality financial institutions with maturities of three months or less at the time of purchase.



Accounts receivable and  allowance for  doubtful accounts



Accounts receivable represent amounts invoiced by the Company. Management maintains an allowance for doubtful accounts based on information obtained regarding individual accounts and historical experience. Amounts deemed uncollectible are written off against the allowance for doubtful accounts.  Bad debts have not had a significant impact on the Company’s financial position, results of operations and cash flows. 



The Company insures receivables for certain customers based upon several factors.  Such factors include the customer’s payment terms, ordering patterns and volume requirements, the customer’s payment history, or general economic conditions of the region in which a customer is located.



Inventories



The Company values its inventory at the lower of average cost, first-in-first-out (FIFO) or net realizable value. The Company reviews its inventory for quantities in excess of production requirements, obsolescence and for compliance with internal quality specifications. A review of inventory on hand is made at least annually and obsolete inventory may be disposed of and/or recycled.  Any adjustments to inventory would be equal to the difference between the cost of inventory and the estimated net market value based upon assumptions about future demand, market conditions and expected cost to distribute those products to market.  The Company also has supply agreements with certain foreign customers to hold inventory at the customer’s warehouses. 



Property, plant and equipment



Property, plant and equipment are recorded at cost and include expenditures which substantially extend their useful lives. Depreciation on property, plant and equipment is calculated using the straight-line method over the estimated useful lives of the assets. Expenditures for maintenance and repairs are charged to earnings as incurred. When equipment is retired or sold, the resulting gain or loss is reflected in earnings.



Assets held for sale



Property classified as held for sale is measured at the lower of its carrying value or fair value less cost to sell.  Gains or losses are recognized for any subsequent changes to fair value less cost to sell; however, gains that may be recognized are limited by cumulative losses previously recognized.  Property held for sale is not depreciated.



Property is classified as held for sale in the period in which management with the appropriate authority commits to a plan to sell the asset; the asset is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets; an active program to locate a buyer and other actions required to complete the plan of sale have been initiated; the sale of the property or asset within one year is probable and will qualify for accounting purposes as a sale; the asset is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and actions required to complete the plan of sale indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.  Long-lived assets classified as held for sale are presented separately in the statement of financial position of the current period (see Note 4)



Fair value hierarchy



The Company groups its assets and liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. 



Level 1 – Valuation is based on quoted prices in active markets for identical assets or liabilities.  Valuations are obtained from readily available pricing sources.



Level 2 – Valuation is based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  



Level 3 – Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.  Level 3 assets and liabilities include financial instruments whose value is determined using unobservable inputs to pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.  



In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.  The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment.  The Company recognizes transfers between levels at the end of the reporting period.  There were no changes in levels in 2016.



At December 31, 2016 and 2015, assets held for sale is the only item in the financial statements reflected at fair value.    Assets held for sale are considered level 3.  The fair value of assets held for sale was determined using the sales price per the amended  purchase and sale agreement, less the estimated cost to sell (see Note 4).



Long-lived and intangible assets



The Company assesses the impairment of long-lived and intangible assets with finite lives annually or whenever events or changes in circumstances indicate that the carrying value may not be fully recoverable. Based upon the annual review, the Company recorded no impairment charges in 2016 and recorded $118,318 in impairment charges in 2015.



In 2015, the Company reviewed unamortized costs for patents pending.  As a result of this review, the Company determined that the patents pending related to the Triggering Recharging and Wireless Transmission of Remote Patient Monitoring Device, as well as the Seed-Beat Selection Method for Signal-Averaged Electrocardiography were no longer patentable and recorded an impairment charge of $103,287 for the full costs of these patents pending.  Additionally, after a review of trade names, the Company determined that the Leominster Tool & Die name no longer provided any future economic benefit and recorded an impairment charge of $15,031 for the remaining unamortized balance of the trade names. 



Intangible assets consist of the following:







 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

Estimated

 

December 31, 2016

 

December 31, 2015



 

Useful Life

 

 

 

 

Accumulated

 

 

 

 

 

 

 

Accumulated

 

 

 



 

(in years)

 

Gross

 

Amortization

 

Net

 

Gross

 

Amortization

 

Net

Patents and trademarks

 

10 

 

$

26,290 

 

$

9,738 

 

$

16,552 

 

$

26,290 

 

$

7,981 

 

$

18,309 

Patents and trademarks pending

 

 —

 

 

13,541 

 

 

 —

 

 

13,541 

 

 

336 

 

 

 —

 

 

336 

Total intangible assets

 

 

 

$

39,831 

 

$

9,738 

 

$

30,093 

 

$

26,626 

 

$

7,981 

 

$

18,645 



Amortization expense related to intangible assets, excluding the above noted 2015 impairment charges, was $1,757 and $3,235 in 2016 and 2015, respectively. Estimated future annual amortization expense for currently amortizing intangible assets is expected to approximate $1,757.



Income taxes



The Company recognizes deferred tax liabilities and assets for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred tax liabilities and assets are determined based on the difference between the financial statement and tax bases of assets and liabilities using tax rates in effect for the year in which the differences are expected to reverse.  



The Company follows the provisions of FASB ASC 740, “Accounting for Uncertainty in Income Taxes—An Interpretation of FASB No. 109.” FASB ASC 740 provides detailed guidance for the financial statement recognition, measurement and disclosure of uncertain tax positions recognized in the financial statements in accordance with SFAS No. 109. Tax positions must meet a “more-likely-than-not” recognition threshold at the effective date to be recognized upon the adoption of FASB ASC 740 and in subsequent periods. No interest and penalties related to uncertain tax positions were accrued at December 31, 2016.    The Company’s primary operations are located in the US. Tax years ended December 31, 2013 or later remain subject to examination by the IRS and state taxing authorities.



Share-based compensation



Share-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as an expense over the employee’s requisite service period (generally the vesting period of the share-based grant).



Comprehensive loss



In 2016 and 2015, the Company has other comprehensive loss of $0 and $42,502, respectively.  In 2016, the change in comprehensive loss was a result of the bankruptcy of RMDDxUSA Corp. (see Note 12).



Earnings per share data



Basic earnings (loss) per share is computed by dividing net income (loss) available to common shareholders by the weighted average number of common shares outstanding.  The computation of diluted earnings (loss) per share is similar to the computation of basic earnings (loss) per share except that the denominator is increased to include the average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued.  In addition, the numerator is adjusted for any changes in net income (loss) that would result from the assumed conversions of those potential shares.



Research and development



Research and development expenses include costs directly attributable to conducting research and development programs primarily related to the development of a unique process to improve silver coating during the manufacturing processes, including the design and testing of specific process improvements for certain medical device components. Such costs include salaries, payroll taxes, employee benefit costs, materials, supplies, depreciation on research equipment, and services provided by outside contractors.  All costs associated with research and development programs are expensed as incurred.



Recently Issued Accounting Pronouncements



In the normal course of business, management evaluates all new accounting pronouncements issued by the Financial Accounting Standard Board (“FASB”), Securities and Exchange Commission (“SEC”), Emerging Issues Task Force (“EITF”), or other authoritative accounting bodies to determine the potential impact they may have on the Company’s Consolidated Financial Statements. Based upon this review, except as noted below, management does not expect any of the recently issued accounting pronouncements, which have not already been adopted, to have a material impact on the Company’s consolidated financial statements.



In August 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-15, “Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments”. This standard provides guidance for eight cash flow classification issues in current GAAP. The standard is effective for interim and annual reporting periods beginning after December 15, 2017.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In March 2016, the FASB issued ASU No. 2016-09, “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”.  The standard is intended to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures.  The standard is intended to reduce the cost and complexity with maintaining or improving the usefulness of information provided to users of financial statements. The standard is effective for interim and annual reporting periods beginning after December 15, 2016 and early adoption is permitted.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires companies to recognize all leases as assets and liabilities on the consolidated balance sheet. The standard retains a distinction between finance leases and operating leases, and the classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the current accounting literature. The result of retaining a distinction between finance leases and operating leases is that under the lessee accounting model in Topic 842, the effect of leases in a consolidated statement of comprehensive income and a consolidated statement of cash flows is largely unchanged from previous GAAP.  The amendments in this standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Earlier application is permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.



In November 2015, the FASB issued ASU No. 2015-17, "Balance Sheet Classification of Deferred Taxes" which requires the presentation of deferred tax assets and deferred tax liabilities, and any related valuation allowances, as noncurrent on the consolidated balance sheets.  The standard is effective for interim and annual reporting periods beginning after December 15, 2016 and early adoption is permitted.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In July 2015, the FASB issued ASU No. 2015-11, “Simplifying the Measurement of Inventory,” which simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This standard is effective for public business entities for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements.



In April 2015, the FASB issued ASU No. 2015-03, "Simplifying the Presentation of Debt Issuance Costs". ASU 2015-03 requires that debt issuance costs be presented as a direct deduction from the carrying amount of the related debt liability, consistent with the presentation of debt discounts. Prior to the issuance of ASU 2015-03, debt issuance costs were required to be presented as deferred charge assets, separate from the related debt liability. ASU 2015-03 does not change the recognition and measurement requirements for debt issuance costs. The Company adopted ASU 2015-03 as of December 31, 2016, and applied its provisions retrospectively. The adoption of ASU 2015-03 did not have an impact on the Company’s financial results nor did it represent a material change to the consolidated balances sheets.



In August 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”, which requires management to assess a company’s ability to continue as a going concern and to provide related footnote disclosures in certain circumstances.  The standard provides guidance on evaluating whether there are conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern.  Substantial doubt exists when conditions or events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued.  The new standard is effective for the annual and interim periods ending after December 15, 2016.  The Company adopted the standard in 2016 and management’s assessment has determined that certain disclosures required are included in these statements (see Note 1). 



In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). The core principle behind ASU No. 2014-09 is that an entity should recognize revenue in an amount that reflects the consideration to which the entity expects to be entitled in exchange for delivering goods and services. This model involves a five-step process that includes identifying the contract with the customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations in the contract and recognizing revenue when the entity satisfies the performance obligations. This ASU allows two methods of adoption; a full retrospective approach where historical financial information is presented in accordance with the new standard, and a modified retrospective approach where this ASU is applied to the most current period presented in the financial statements. In August 2015, the FASB issued ASU No 2015-14 “Revenue from Contracts with Customers: Deferral of the Effective Date,” which deferred the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017, with earlier application permitted as of annual reporting periods beginning after December 15, 2016. The Company is currently assessing the financial impact of adopting ASU 2014-09 and the methods of adoption; however, given the scope of the new standard, the Company is currently unable to provide a reasonable estimate regarding the financial impact or which method of adoption will be elected.



Reclassification of prior period balances



Amounts in prior year financial statements are reclassified when necessary to conform to the current year presentation, most notably debt issuance costs in according with ASU 2015-03 as described more fully above.

 


Inventories
v6.14.0.7
Inventories
12 Months Ended
Dec. 31, 2016
Inventories [Abstract]  
Inventories

3.  Inventories



Inventories consist of the following:







 

 

 

 

 

 



 

 

 

 

 

 



 

December 31,

 

December 31,



 

2016

 

2015

Raw materials

 

$

1,027,474 

 

$

775,427 

Work-in-process

 

 

537,858 

 

 

265,113 

Finished goods

 

 

1,494,753 

 

 

1,078,172 

Total

 

$

3,060,085 

 

$

2,118,712 



The total cost of silver in our inventory as raw materials, as work-in-process or as a plated surface on finished goods had an estimated cost of $521,746 and $313,738 at December 31, 2016 and 2015, respectively. The increase in inventory was due in part to increased finished goods inventory for sensors as a result of certain supply agreements with foreign customers.

 


Property, Plant and Equipment, net
v6.14.0.7
Property, Plant and Equipment, net
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment, net [Abstract]  
Property, Plant and Equipment, net

4.  Property, Plant and Equipment, Net



Property, plant and equipment, net consist of the following:







 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Asset Lives

 

December 31,

 

December 31,



 

(in years)

 

2016

 

2015

Machinery and equipment

 

3

to

15

 

$

16,647,302 

 

$

15,168,377 

Building and improvements

 

5

to

25

 

 

3,986,715 

 

 

3,978,387 

Vehicles

 

3

to

5

 

 

90,713 

 

 

90,713 

Furniture, fixtures, computers and software

 

3

to

5

 

 

1,504,776 

 

 

1,437,692 

Construction in progress

 

 

 

 

 

 

402,099 

 

 

682,069 

Total property, plant and equipment

 

 

 

 

 

 

22,631,605 

 

 

21,357,238 

Less: accumulated depreciation

 

 

 

 

 

 

(16,190,694)

 

 

(14,731,169)

Property, plant and equipment, net

 

 

 

 

 

$

6,440,911 

 

$

6,626,069 



For the year ended December 31, 2016, the Company recorded $1,539,249 of depreciation expense compared to $1,461,353 for the year ended December 31, 2015. There are no commitments related to the completion of construction in process as of December 31, 2016.



In December 2015, the Company entered into a Letter of Intent with a Buyer (collectively the “Parties”) to sell two unoccupied buildings, with a total of approximately 52,000 square feet, and land, at its Fitchburg, Massachusetts campus.  Subsequently, in January 2016, the Parties entered into a Purchase and Sale Agreement (“Agreement”) for this real estate to close within twelve months from the date of the Agreement.  As these buildings were under agreement to be sold at December 31, 2015 they were classified as Assets Held for Sale valued at $665,000 as of December 31, 2015.  The carrying value approximated the fair value less the cost to sell.



In December 2016, the Parties entered into a First Amendment to the Purchase and Sale Agreement (the “First Amendment”).  The First Amendment extended the time to close to January 13, 2018.  As consideration for extending the Agreement, the Buyer agreed to (i) release the $25,000 being held as a deposit to the Company; (ii) increase the purchase price by $25,000; (iii) pay the Company $4,000 per month as an extension fee beginning in January 2017 through January 2018, or the culmination of the Agreement, and (iv) pay the Company $7,500 per month for a 150 day additional extension, to June 2018, only for the purpose of the Buyer securing historical tax credits until the termination or culmination of the Agreement.  The $25,000 deposit released to the Company is recorded as Other Income for the year ended December 31, 2016.



In January 2017, the Parties entered into a Second Amendment to the Purchase and Sale Agreement (the “Second Amendment”).  The Second Amendment (i) permits the Buyer to assign the Agreement to a third party; (ii) extends the term of the $4,000 per month extension fee from January 2018 to March 2018 and (iii) and amends the term of the additional extension fee of $7,500  per month to April 2018 through July 2018.



As a result of the increase in sale price and other considerations, the Company determined the carrying value at December 31, 2016 to be $688,750.  The increase in the carrying value is recorded as Other Income for the year ended December 31, 2016 and did not exceed the amount of previously recorded losses in accordance with appropriate accounting guidance. 

 


Debt
v6.14.0.7
Debt
12 Months Ended
Dec. 31, 2016
Debt [Abstract]  
Debt

5.  Debt



The following tables set forth the items which comprise debt for the Company:







 

 

 

 

 

 



 

 

 

 

 

 



 

December 31,

 

December 31,



 

2016

 

2015

Revolving line of credit

 

$

1,785,795 

 

$

1,511,495 

Equipment line of credit

 

$

102,500 

 

$

336,850 

Subordinated promissory notes, net of discount

 

$

432,011 

 

$

473,135 



 

 

 

 

 

 

Term notes payable:

 

 

 

 

 

 

Commercial term loan, net of debt issuance costs

 

$

2,398,870 

 

$

668,246 

Equipment term loans

 

 

 —

 

 

879,898 

Equipment notes

 

 

59,461 

 

 

116,214 

Total term notes payable

 

$

2,458,331 

 

$

1,664,358 



 

 

 

 

 

 

Total Debt

 

$

4,778,637 

 

$

3,985,838 



Bank Debt



The Company has a multi-year credit facility with a Massachusetts based bank.  At December 31, 2016 this credit facility consisted of a revolving line of credit (the "revolver"), a commercial term loan and an equipment line of credit.  The debt is secured by substantially all assets of the Company with the exception of real property.



At December 31, 2015 the credit facility included a revolver, a commercial term loan, two equipment term loans and an equipment line of credit.  In June of 2016 the equipment line of credit converted to a term loan.  In November 2016 these four borrowings, along with $500,000 from the revolver, were consolidated into a single commercial term loan as further described below. 



Revolver



The revolver provides for borrowings up to 80% of eligible accounts receivable and 50% of eligible raw materials inventory.  The interest rate on the revolver is calculated at the bank's prime rate plus 0.25%  (4.0% at December 31, 2016). The revolver has a maturity date of June 2017. Amounts available to borrow under the revolver are $727,156 at December 31, 2016.   In November 2016 the Company refinanced and consolidated $500,000 from the revolver into a new term loan as further described below.



Commercial term loan



In November 2016, the Company refinanced its bank term debt, including the commercial term loan and three equipment term loans, along with $500,000 from the revolver, into a new $2,481,943 consolidated five year commercial term loan with a maturity date in November 2021. The interest rate on the loan is a fixed 4.65% per annum and the loan requires monthly payments of principal and interest of approximately $46,500.



Equipment line of credit and equipment term loans



In March 2013, the Company entered into an equipment line of credit that allowed for advances of up to $1.0 million and included a one-year draw period during which payments were interest only. The draw period ended in March 2014 and the then outstanding balance on the equipment line of credit of $740,999 was converted to an equipment term loan with a five-year term, maturing in March 2019.  In November 2016, the outstanding principal and accrued interest of $380,791 on the equipment term loan was refinanced and consolidated into a new term loan as described above.



In June 2014, the Company entered into an equipment line of credit that allowed for advances of up to $1.0 million and included a one-year draw period during which payments were interest only. The draw period ended in June 2015 and the then outstanding balance on the equipment line of credit of $415,785 was converted to an equipment term loan with a five-year term, maturing in June 2020.  In November 2016, the outstanding principal and accrued interest of $315,272 on the equipment term loan was refinanced and consolidated into a new term loan as described above.



In June 2015, the Company entered into an equipment line of credit that allowed for advances of up to $1.0 million and included a one-year draw period during which payments were interest only.  At December 31, 2015, the Company had drawn $336,850 on the equipment line of credit. The draw period ended in June 2016 and the then outstanding balance on the equipment line of credit of $881,701 was converted to an equipment term loan with a five-year term, maturing in June 2021.  In November 2016, the outstanding principal and accrued interest of $832,420 on the equipment term loan was refinanced and consolidated into a new term loan as described above. In November 2016, the Company entered into a new equipment line of credit that allows for advances of up to $1.0 million under the Company's multi-year credit facility. At December 31, 2016,  $102,500 has been drawn on the new equipment line of credit. The term of this equipment line of credit is six years, maturing in November 2022, inclusive of a maximum one-year draw period. Repayment shall consist of monthly interest only payments, equal to the bank's prime rate plus 0.25% as to each advance commencing on the date of the loan through the earlier of: (i) one year from the date of the loan or (ii) the date upon which the equipment line of credit is fully advanced (the “Conversion Date”). On the Conversion Date, principal and interest payments will be due and payable monthly in an amount sufficient to pay the loan in full based upon an amortization schedule commensurate with the remaining term of the loan.



Debt issuance costs



The amount of the commercial term loan presented in the table above is net of debt issuance costs of $45,858 and $45,929 at December 31, 2016 and 2015 respectively.



Bank covenants



The bank facility contains both financial and non-financial covenants. The financial covenants include maintaining certain debt coverage and leverage ratios. The non-financial covenants relate to various matters including notice prior to executing further borrowings and security interests, mergers or consolidations, acquisitions, guarantees, sales of assets other than in the normal course of business, leasing, changes in ownership and payment of dividends. The Company was in compliance with all bank covenants as of December 31, 2016.



Other debt



Equipment notes



In January 2013, the Company entered into two equipment notes totaling $272,500 with a financing company to acquire production equipment. The notes bear interest at 4.66% and require monthly payments of principal and interest totaling approximately $5,000 over the term of five years.



Subordinated promissory notes



In December 2013, the Company completed a private offering in which the Company sold an aggregate of $500,000 in subordinated promissory notes. The unsecured notes required quarterly interest-only payments at a rate of 10% per annum for the first two years.  In  December 2015, the interest rate increased to 12% per annum.  The Company’s two largest beneficial owners of stock and a director participated in the private offering as follows:  REF Securities, LLP, beneficial owner of approximately 13% of the Company’s common stock, invested $100,000 in the offering; the Chambers Medical Foundation (the “Foundation”), beneficial owner of approximately 10% of the Company’s common stock, invested $100,000 in the offering; and Mr. E.P. Marinos, a director, invested $50,000 in the offering.  The Company’s Chairman of the Board is a co-trustee of the Foundation but has held no dispositive powers since his appointment as such. 

 

In October 2016, the Company and six of the seven investors in the private offering, aggregating $450,000 of the notes, including the three related parties holding $250,000 of the notes, agreed to extend the maturity dates of the notes to December 31, 2018 at a rate of 10% per annum.  One investor did not extend the maturity date and that $50,000 note was paid at maturity in December 2016.  The notes are subordinated to all indebtedness of the Company pursuant to its multi-year bank credit facility.



In connection with the subordinated promissory notes, the Company issued 100,000 warrants to purchase the Company's common stock, including 20,000 warrants to REF Securities, LLP, 20,000 warrants to the Foundation and 10,000 warrants to Mr. Marinos.  The warrants were exercisable through December 2016 at an exercise price of $3.51 per share.  In 2014, 30,000 warrants were exercised, including 20,000 by the FoundationNo warrants were exercised in 2015 or 2016.  In October 2016, in connection with the extension of the maturity dates of the subordinated promissory notes, the expiration date of the remaining 70,000 warrants was extended to December 31, 2018.  The exercise price remained unchanged at $3.51 per share.  The 70,000 warrants remain unexercised at December 31, 2016.



The Company calculated the incremental fair value of extending the expiration date of the Notes and Warrants and determined that the amendment represented a debt modification in accordance with the guidance outlined in ASC-470, “Debt”.  Using the Black-Scholes model, and the 10% test, the Company determined that the incremental fair value of the warrants to be $18,310 which was recorded as a reduction against the Notes and an increase in Additional Paid-in Capital. 



Future maturities of debt for the years ending December 31 are as follows:







 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



2017

 

2018

 

2019

 

2020

 

2021

Thereafter

 

Total

Revolver

$

1,785,795 

 

$

 —

 

$

 —

 

$

 —

 

$

 —

 —

 

$

1,785,795 

Subordinated promissory notes

 

 —

 

 

450,000 

 

 

 —

 

 

 —

 

 

 —

 —

 

 

450,000 

Term debt and equipment notes

 

513,602 

 

 

493,337 

 

 

516,975 

 

 

541,616 

 

 

520,782  20,376 

 

 

2,606,688 

Total

$

2,299,397 

 

$

943,337 

 

$

516,975 

 

$

541,616 

 

$

520,782  20,376 

 

$

4,842,483 

 


Income Taxes
v6.14.0.7
Income Taxes
12 Months Ended
Dec. 31, 2016
Income Taxes [Abstract]  
Income Taxes

6.  Income Taxes



The income tax provision consists of the following:







 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Current:

 

 

 

 

 

 

Federal

 

$

 —

 

$

 —

State

 

 

 —

 

 

932 

Total current income taxes

 

 

 —

 

 

932 

Deferred:

 

 

 

 

 

 

Federal

 

 

 —

 

 

 —

State

 

 

 —

 

 

 —

Total deferred income taxes

 

 

 —

 

 

 —

Total income tax provision

 

$

 —

 

$

932 



The components of deferred income taxes are as follows:







 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Deferred tax assets:

 

 

 

 

 

 



 

 

 

 

 

 

Net operating loss carryforwards

 

$

3,671,600 

 

$

3,221,000 

Federal and state tax credit carryforwards

 

 

493,800 

 

 

608,000 

Accruals and reserves

 

 

104,600 

 

 

117,300 

Stock based compensation

 

 

96,000 

 

 

89,800 

Patents and intangibles

 

 

51,100 

 

 

68,100 

Other long-term

 

 

500 

 

 

45,500 

     Total long-term deferred tax assets

 

 

4,417,600 

 

 

4,149,700 



 

 

 

 

 

 

Deferred tax valuation allowance

 

 

(3,812,900)

 

 

(3,472,300)

Deferred tax assets, net of allowance

 

 

604,700 

 

 

677,400 



 

 

 

 

 

 

Property, plant and equipment

 

 

(544,000)

 

 

(612,800)

Prepaid expenses

 

 

(60,700)

 

 

(64,600)

     Total deferred tax liabilities

 

 

(604,700)

 

 

(677,400)



 

 

 

 

 

 

Net deferred tax assets (liabilities)

 

$

 —

 

$

 —



In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax-planning strategies in making this assessment. As of December 31, 2016, the  Company continues to maintain a valuation allowance against all of its deferred tax assets.



In 2016, the Company adopted ASU No. 2015-17, "Balance Sheet Classification of Deferred Taxes".  Under this new guidance the Company is required to present deferred tax assets and deferred tax liabilities, and any related valuation allowances, as noncurrent on the consolidated balance sheets.  There was no cumulative effect of the change and no impact to shareholders’ equity, results of operations or cash flows.



For the year ended December 31, 2016, the Company has federal and state net operating loss carryforwards totaling $9,124,000 and $10,780,000 respectively, which begin to expire in 2031. The Company also had federal and state tax credit carryovers of $305,800 and $188,000, respectively. The federal and state credits begin to expire in 2027 and 2016, respectively.



The Company files a consolidated federal income tax return.  The actual income tax provision differs from applying the Federal statutory income tax rate (34%) to the pre-income tax loss from continuing operations as follows:







 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Tax benefit computed at statutory rate

 

$

(250,071)

 

$

(145,442)

Increases (reductions) due to:

 

 

 

 

 

 

Change in valuation allowance

 

 

340,600 

 

 

230,300 

State income taxes, net of federal benefit

 

 

(27,646)

 

 

615 

Permanent differences

 

 

15,124 

 

 

479 

Tax credits (federal and state)

 

 

(32,577)

 

 

(108,194)

Differences on prior returns (federal and state)

 

 

(45,430)

 

 

23,174 

Income tax (benefit) provision

 

$

 —

 

$

932 

 


Employee Benefit Plans
v6.14.0.7
Employee Benefit Plans
12 Months Ended
Dec. 31, 2016
Employee Benefit Plans [Abstract]  
Employee Benefit Plans

7.  Employee Benefit Plans



The Company sponsors an Employee Savings and Investment Plan under Section 401(k) of the Internal Revenue Code covering all eligible employees of the Company.  Employees can contribute up to 90% of their eligible compensation to the maximum allowable by the IRS.  The Company’s matching contributions are at the discretion of the Company.  The Company’s matching contributions in 2016 and 2015 were $41,072 and $47,858, respectively.

 


Commitments and Contingencies
v6.14.0.7
Commitments and Contingencies
12 Months Ended
Dec. 31, 2016
Commitments and Contingencies [Abstract]  
Commitments and Contingencies

8.  Commitments and Contingencies



Legal matters



In the ordinary course of its business, the Company is involved in various legal proceedings involving a variety of matters. The Company does not believe there are any pending legal proceedings that will have a material impact on the Company’s financial position or results of operations.



Operating lease agreements



In 2016, the Company entered into two operating leases for office equipment. The Company’s leases require future minimum annual lease payments of  $24,036 for fiscal years 2017 and 2018, respectively.

 


Shareholders' Equity
v6.14.0.7
Shareholders' Equity
12 Months Ended
Dec. 31, 2016
Shareholders' Equity [Abstract]  
Shareholders' Equity

9.  Shareholders’ equity



Common stock



In 2016,  15,000 shares were issued out of treasury as a result of the exercise of stock options and no warrants were exercised.  In 2015,  23,300 shares were issued out of treasury as a result of the exercise of stock options and no warrants were exercised.



No dividends were declared or paid in 2016 or 2015.  



Warrants



In connection with the subordinated promissory notes issued in December 2013 (see Note 5), the Company issued warrants to purchase 100,000 shares of the Company's common stock. The warrants were exercisable through December 2016 at an exercise price of $3.51 per share.  In 2014, 30,000 warrants were exercised.  No warrants were exercised in 2015 or 2016.  In October 2016, in connection with the extension of the maturity dates of the subordinated promissory notes, the expiration date of the remaining 70,000 warrants was extended to December 31, 2018.  The Company determined that the amendment represented a debt modification and did not constitute an extinguishment for accounting purposes (see Note 5).  The exercise price remained unchanged at $3.51 per share.  The 70,000 warrants remain unexercised at December 31, 2016. 



Stock options and Share-Based Incentive Plan



In March 2010, the Company's Board of Directors adopted the Arrhythmia Research Technology, Inc. 2010 Equity Incentive Plan (the “Plan”). The Plan authorizes the issuance of an aggregate of 500,000 shares. The Plan provides the Company flexibility to award a mix of stock options, equity incentive grants, performance awards and other types of stock-based compensation to certain eligible employees, non-employee directors, or consultants and under which an aggregate of 500,000 shares have been reserved for such grants. The options granted have ten year contractual terms that vest annually between three to five-year terms.



At December 31, 2016, there were options to acquire an aggregate of 214,500 shares outstanding. At December 31, 2016, there were 273,000 shares available for future grants under the Plan, after giving effect to shares which became available for reissuance due to expired or forfeited options.



The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option pricing model that uses the assumptions noted in the following table. Expected volatilities are based on historical volatility of the Common Stock using historical periods consistent with the expected term of the options. The expected term of options granted under the Company’s equity incentive plan, all of which qualify as “plain vanilla,” is based on the average of the contractual term and the vesting period as permitted under SEC Staff Accounting Bulletin Nos. 107 and 110. The risk-free rate is based on the yield of a U.S. Treasury security with a term consistent with the option.



During 2016 and 2015 there were 45,000 and 62,500 new option grants, respectively. The assumptions used to measure the fair value of option grants in 2016 and 2015 were as follows:







 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Expected option term

 

 

6.0 to 6.5

 

 

 

4.0 to 6.5

 

Expected volatility factor

 

 

23.7% to 24.4%

 

 

 

23.8% to 26.7%

 

Risk-free rate

 

 

.90% to .99%

 

 

 

.90% to 1.28%

 

Expected annual dividend yield

 

 

—%

 

 

 

—%

 



The following table sets forth the stock option transactions for the year ended December 31, 2016:







 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

Weighted

 

 

 



 

 

 

Weighted

 

average

 

 

 



 

 

 

Average

 

remaining

 

Aggregate



 

Number of

 

Exercise

 

contractual

 

Intrinsic



 

options

 

Price

 

term (in years)

 

Value

Outstanding at December 31, 2015

 

184,500 

 

$

6.21 

 

6.80 

 

$

235,293 

Granted

 

45,000 

 

 

4.07 

 

 

 

 

 

Exercised

 

(15,000)

 

 

3.41 

 

 

 

 

 

Outstanding at December 31, 2016

 

214,500 

 

$

5.96 

 

7.12 

 

$

17,340 

Exercisable at December 31, 2016

 

109,495 

 

$

6.90 

 

5.47 

 

$

8,880 

Exercisable at December 31, 2015

 

83,500 

 

$

6.60 

 

4.73 

 

$

106,565 



The total intrinsic value of options exercised during 2016 and 2015 were $30,600 and $60,197, respectively. For the years ended December 31, 2016 and 2015, share-based compensation expense related to stock options and the non-cash issuance of common stock amounted to $47,256 and $29,178, respectively, and is included in general and administrative expenses. As of December 31, 2016 and 2015, there was $134,354 and $134,160 of unrecognized compensation costs, respectively, related to non-vested share-based compensation arrangements granted under the stock option plan.  This cost is expected to be recognized over a weighted average period of 2.7 years. The weighted average grant date fair value of options issued in 2016 was $1.05.

 


Earnings Per Share
v6.14.0.7
Earnings Per Share
12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Earnings Per Share

10.  Earnings per share



Basic earnings (loss) per share is computed by dividing net income (loss) available to common shareholders by the weighted average number of common shares outstanding.  The computation of diluted earnings (loss) per share is similar to the computation of basic earnings (loss) per share except that the denominator is increased to include the average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued.  In addition, the numerator is adjusted for any changes in net income (loss) that would result from the assumed conversions of those potential shares.



As of December 31, 2016, there were options to purchase 214,500 shares and warrants to purchase 70,000 shares of the Company's common stock outstanding, all of which were anti-dilutive. Therefore, none of these options or warrants were included in the calculation of loss per share in 2016.



As of December 31, 2015, there were options to purchase 184,500 shares and warrants to purchase 70,000 shares of the Company's common stock outstanding, all of which were anti-dilutive.  Therefore, none of these options or warrants were included in the calculation of loss per share in 2015.



The following table shows the calculation of earnings (loss) per share for the years ended December 31, 2016 and 2015:







 

 

 

 

 



 

 

 

 

 



Years Ended



December 31,



2016

 

2015

Loss from continuing operations

$

(712,462)

 

$

(791,776)

Income from discontinued operations, net of tax

 

 —

 

 

362,610 

Net loss available to common shareholders

$

(712,462)

 

$

(429,166)

Basic EPS:

 

 

 

 

 

Weighted average common shares outstanding

 

2,816,516 

 

 

2,784,757 

Earnings (loss) per share - basic

 

 

 

 

 

Continuing operations

$

(0.25)

 

$

(0.28)

Discontinued operations

 

 —

 

 

0.13 

Consolidated basic EPS

$

(0.25)

 

$

(0.15)

Diluted EPS:

 

 

 

 

 

Weighted average common shares outstanding

 

2,816,516 

 

 

2,784,757 

Assumed conversion of net common shares issuable
under stock option plans

 

 —

 

 

 —

Assumed conversion of net common shares issuable
under warrants

 

 —

 

 

 —

Weighted average common and common equivalent shares
outstanding, diluted

 

2,816,516 

 

 

2,784,757 

Earnings (loss) per share - diluted

 

 

 

 

 

Continuing operations

$

(0.25)

 

$

(0.28)

Discontinued operations

 

 —

 

 

0.13 

Consolidated diluted EPS

$

(0.25)

 

$

(0.15)

 


Industry and Geographic Segments
v6.14.0.7
Industry and Geographic Segments
12 Months Ended
Dec. 31, 2016
Industry and Geographic Segments [Abstract]  
Industry and Geographic Segments



11.  Industry and Geographic Segments



The Company’s Chief Operating and Decision Maker ("CODM") manages the operations and reviews the results of operations as a single reporting unit. While the Company operates its business as one segment, the Company has diversified manufacturing capabilities as evidenced by its product offerings across several industry categories supporting customers around the globe.



The following table sets forth, for the periods indicated, the consolidated revenue and percentages of revenue from continuing operations derived from the sales of the Company's products and services in certain industries.







 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Revenue for the Years Ended December 31,



 

2016

 

   %

 

2015

 

%

Medical

 

$

14,543,315 

 

74 

 

$

16,770,788 

 

78 

Automotive/Industrial

 

 

3,787,312 

 

19 

 

 

2,839,926 

 

13 

Consumer Products

 

 

744,738 

 

 

 

647,190 

 

Military and Law Enforcement

 

 

383,254 

 

 

 

943,603 

 

Other

 

 

179,598 

 

 

 

293,677 

 

Total

 

$

19,638,217 

 

100 

 

$

21,495,184 

 

100 



The following table sets forth, for the periods indicated, the consolidated revenue and percentages of revenue from continuing operations derived from the sales of all of the Company's products and services by geographic market.







 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Revenue for the Years Ended December 31,



 

2016

 

   %

 

2015

 

%

United States 

 

$

12,206,761 

 

62 

 

$

13,199,188 

 

61 

Asia

 

 

4,283,180 

 

22 

 

 

4,774,910 

 

22 

Europe 

 

 

1,677,100 

 

 

 

1,662,318 

 

Canada 

 

 

1,268,817 

 

 

 

1,607,445 

 

Other 

 

 

202,359 

 

 

 

251,323 

 

Total 

 

$

19,638,217 

 

100 

 

$

21,495,184 

 

100 

 


Discontinued Operations
v6.14.0.7
Discontinued Operations
12 Months Ended
Dec. 31, 2016
Discontinued Operations [Abstract]  
Discontinued Operations

12.  Discontinued Operations



The Company's subsidiary, RMDDxUSA Corp. and its Prince Edward Island subsidiary RMDDx Corporation (collectively "WirelessDx"), discontinued operations in 2012, filed for relief under Chapter 7 (Liquidation) of the United States Bankruptcy Code in 2014 and in March 2015, the Chapter 7 Order was formally discharged and the case was closed.  In 2015, net income of $362,610 was recorded from discontinued operations as a result of the related write-off of the remaining liabilities and cumulative translation adjustment.

  


Subsequent Events
v6.14.0.7
Subsequent Events
12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]  
Subsequent Events

13.  Subsequent Events



Assets held for sale



In January 2017, the Company entered into a Second Amendment to the Purchase and Sale Agreement (the “Second Amendment”) related to the sale of certain real estate recorded as assets held for sale (see Note 4).  The Second Amendment (i) permits the Buyer to assign the Agreement to a third party; (ii) extends the term of the $4,000 per month extension fee from January  2018 to March 2018 and (iii) and amends the term of the additional extension fee of $7,500 per month to April 2018 through July 2018.



Company name change



On March 9, 2017, Arrhythmia Research Technology, Inc. (the Company”) filed a Certificate of Amendment to its Certificate of Incorporation, as amended, with the Delaware Secretary of State to amend Article First of the Company’s Certificate of Incorporation to change the name of the corporation to “Micron Solutions, Inc.”.  The effective date of the amendment is March 24, 2017.


Accounting Policies (Policies)
v6.14.0.7
Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Principles of consolidation

Principles of consolidation



The consolidated financial statements (the "financial statements") include the accounts of ART, Micron and WirelessDx. WirelessDx is presented herein as discontinued operations. All intercompany balances and transactions have been eliminated in consolidation.

Use of estimates

Use of estimates



The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods.  Actual results could differ from those estimates.

Revenue Recognition

Revenue recognition



Revenue is recorded when all criteria for revenue recognition have been satisfied.  Revenue is recognized in the period when persuasive evidence of an arrangement with a customer exists, the products are shipped and title has transferred or when exclusive control has been transferred to the customer,  the price is fixed or determinable and collection is probable.  The Company has entered into supply agreements with certain foreign customers where revenue is not recognized when the product is shipped but instead is recognized when the customer consumes the product. 



The Company enters into arrangements containing multiple elements which may include a combination of the sale of molds, tooling, engineering and validation services ("tooling") and production units. The Company has determined that certain engineering and tooling arrangements, and the related production units, represent one unit of accounting, based on an assessment of the respective standalone value. When the Company determines that an arrangement represents one unit of accounting, the revenue is deferred over the estimated product life-cycle, based upon historical knowledge of the customer, which is generally one to three years. The Company carries the sales and tooling costs, associated with the related arrangement, as deferred revenue and other current and non-current assets, respectively, on the Company's balance sheet. As the deferred revenue is amortized to sales over the product lifecycle, the associated prepaid tooling costs are amortized to cost of sales.



The Company cannot effectively predict short-term or long-term production volume in a consistent and meaningful manner, due to the nature of these molds and associated products. Therefore, the Company is unable to account for the transactions under the Units of Production method and management has determined the most appropriate amortization method to be the Straight-Line method.



The Company may from time to time, at the customer's request, enter into a bill and hold arrangement. The Company evaluates the nature of the arrangement including, but not limited to (i) the customer's business purpose, (ii) the transfer of risk of ownership to the customer and (iii) the segregation of inventory, along with other elements in accordance with relevant accounting guidance to determine the appropriate method of revenue recognition for each arrangement.



Revenue for software license sales is recognized when licenses are sold as the revenue cycle is completed with no warranty, returns or technical support to customers. Total revenue from software sales was immaterial in relation to consolidated revenues.

Fair value of financial instruments

Fair value of financial instruments



The carrying amount reported in the balance sheets for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value due to the immediate or short-term nature of such instruments. The carrying value of debt approximates fair value since it provides for market terms and interest rates.

Concentration of credit risk

Concentration of credit risk



Financial instruments which potentially expose the Company to concentrations of credit risk consist primarily of accounts receivable and cash and cash equivalents. It is the Company’s policy to place its cash in high quality financial institutions. The Company does not believe significant credit risk exists above federally insured limits with respect to these institutions.



Accounts receivable are customer obligations due under normal trade terms. A large portion of the Company's products are sold to large diversified medical, military and law enforcement product manufacturers. The Company does not generally require collateral for its sales; however, the Company believes that its terms of sale provide adequate protection against credit risk.    While the Company has a strong record of collecting on its receivables, the Company maintains Accounts Receivables insurance in order to mitigate concentration of credit risk where our top five customers in revenue constituted 46% of the Accounts Receivables at December 31, 2016 as compared to 51% at December 31, 2015.



During the year ended December 31, 2016, the Company had net sales to two customers constituting 19% and 12% of total 2016 net sales. Accounts receivable from these two customers at December 31, 2016 was 26% and 7%, respectively,  of the total accounts receivable balance at year end. During the year ended December 31, 2015, the Company had net sales to two customers constituting 16% and 13%, respectively, of total 2015 net sales. Accounts receivable from the two customers at December 31, 2015 was 9% for each of the total accounts receivable balance at year end.

Cash and cash equivalents

Cash and cash equivalents



Cash and cash equivalents consist of cash on hand and on deposit in high quality financial institutions with maturities of three months or less at the time of purchase.

Accounts receivable and Allowance for Doubtful Accounts

Accounts receivable and  allowance for  doubtful accounts



Accounts receivable represent amounts invoiced by the Company. Management maintains an allowance for doubtful accounts based on information obtained regarding individual accounts and historical experience. Amounts deemed uncollectible are written off against the allowance for doubtful accounts.  Bad debts have not had a significant impact on the Company’s financial position, results of operations and cash flows. 



The Company insures receivables for certain customers based upon several factors.  Such factors include the customer’s payment terms, ordering patterns and volume requirements, the customer’s payment history, or general economic conditions of the region in which a customer is located.

Inventories

Inventories



The Company values its inventory at the lower of average cost, first-in-first-out (FIFO) or net realizable value. The Company reviews its inventory for quantities in excess of production requirements, obsolescence and for compliance with internal quality specifications. A review of inventory on hand is made at least annually and obsolete inventory may be disposed of and/or recycled.  Any adjustments to inventory would be equal to the difference between the cost of inventory and the estimated net market value based upon assumptions about future demand, market conditions and expected cost to distribute those products to market.  The Company also has supply agreements with certain foreign customers to hold inventory at the customer’s warehouses. 



Property, plant and equipment

Property, plant and equipment



Property, plant and equipment are recorded at cost and include expenditures which substantially extend their useful lives. Depreciation on property, plant and equipment is calculated using the straight-line method over the estimated useful lives of the assets. Expenditures for maintenance and repairs are charged to earnings as incurred. When equipment is retired or sold, the resulting gain or loss is reflected in earnings.

Assets held for sale

Assets held for sale



Property classified as held for sale is measured at the lower of its carrying value or fair value less cost to sell.  Gains or losses are recognized for any subsequent changes to fair value less cost to sell; however, gains that may be recognized are limited by cumulative losses previously recognized.  Property held for sale is not depreciated.



Property is classified as held for sale in the period in which management with the appropriate authority commits to a plan to sell the asset; the asset is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets; an active program to locate a buyer and other actions required to complete the plan of sale have been initiated; the sale of the property or asset within one year is probable and will qualify for accounting purposes as a sale; the asset is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and actions required to complete the plan of sale indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.  Long-lived assets classified as held for sale are presented separately in the statement of financial position of the current period (see Note 4)

Fair value heirarchy

Fair value hierarchy



The Company groups its assets and liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. 



Level 1 – Valuation is based on quoted prices in active markets for identical assets or liabilities.  Valuations are obtained from readily available pricing sources.



Level 2 – Valuation is based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  



Level 3 – Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.  Level 3 assets and liabilities include financial instruments whose value is determined using unobservable inputs to pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.  



In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.  The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment.  The Company recognizes transfers between levels at the end of the reporting period.  There were no changes in levels in 2016.



At December 31, 2016 and 2015, assets held for sale is the only item in the financial statements reflected at fair value.    Assets held for sale are considered level 3.  The fair value of assets held for sale was determined using the sales price per the amended  purchase and sale agreement, less the estimated cost to sell (see Note 4).

Long-lived and intangible assets

Long-lived and intangible assets



The Company assesses the impairment of long-lived and intangible assets with finite lives annually or whenever events or changes in circumstances indicate that the carrying value may not be fully recoverable. Based upon the annual review, the Company recorded no impairment charges in 2016 and recorded $118,318 in impairment charges in 2015.



In 2015, the Company reviewed unamortized costs for patents pending.  As a result of this review, the Company determined that the patents pending related to the Triggering Recharging and Wireless Transmission of Remote Patient Monitoring Device, as well as the Seed-Beat Selection Method for Signal-Averaged Electrocardiography were no longer patentable and recorded an impairment charge of $103,287 for the full costs of these patents pending.  Additionally, after a review of trade names, the Company determined that the Leominster Tool & Die name no longer provided any future economic benefit and recorded an impairment charge of $15,031 for the remaining unamortized balance of the trade names. 



Intangible assets consist of the following:







 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

Estimated

 

December 31, 2016

 

December 31, 2015



 

Useful Life

 

 

 

 

Accumulated

 

 

 

 

 

 

 

Accumulated

 

 

 



 

(in years)

 

Gross

 

Amortization

 

Net

 

Gross

 

Amortization

 

Net

Patents and trademarks

 

10 

 

$

26,290 

 

$

9,738 

 

$

16,552 

 

$

26,290 

 

$

7,981 

 

$

18,309 

Patents and trademarks pending

 

 —

 

 

13,541 

 

 

 —

 

 

13,541 

 

 

336 

 

 

 —

 

 

336 

Total intangible assets

 

 

 

$

39,831 

 

$

9,738 

 

$

30,093 

 

$

26,626 

 

$

7,981 

 

$

18,645 



Amortization expense related to intangible assets, excluding the above noted 2015 impairment charges, was $1,757 and $3,235 in 2016 and 2015, respectively. Estimated future annual amortization expense for currently amortizing intangible assets is expected to approximate $1,757.

Income taxes

Income taxes



The Company recognizes deferred tax liabilities and assets for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred tax liabilities and assets are determined based on the difference between the financial statement and tax bases of assets and liabilities using tax rates in effect for the year in which the differences are expected to reverse.  



The Company follows the provisions of FASB ASC 740, “Accounting for Uncertainty in Income Taxes—An Interpretation of FASB No. 109.” FASB ASC 740 provides detailed guidance for the financial statement recognition, measurement and disclosure of uncertain tax positions recognized in the financial statements in accordance with SFAS No. 109. Tax positions must meet a “more-likely-than-not” recognition threshold at the effective date to be recognized upon the adoption of FASB ASC 740 and in subsequent periods. No interest and penalties related to uncertain tax positions were accrued at December 31, 2016.    The Company’s primary operations are located in the US. Tax years ended December 31, 2013 or later remain subject to examination by the IRS and state taxing authorities.

Share-based compensation

Share-based compensation



Share-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as an expense over the employee’s requisite service period (generally the vesting period of the share-based grant).

Comprehensive loss

Comprehensive loss



In 2016 and 2015, the Company has other comprehensive loss of $0 and $42,502, respectively.  In 2016, the change in comprehensive loss was a result of the bankruptcy of RMDDxUSA Corp. (see Note 12).

Earnings per share data

Earnings per share data



Basic earnings (loss) per share is computed by dividing net income (loss) available to common shareholders by the weighted average number of common shares outstanding.  The computation of diluted earnings (loss) per share is similar to the computation of basic earnings (loss) per share except that the denominator is increased to include the average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued.  In addition, the numerator is adjusted for any changes in net income (loss) that would result from the assumed conversions of those potential shares.

Research and development

Research and development



Research and development expenses include costs directly attributable to conducting research and development programs primarily related to the development of a unique process to improve silver coating during the manufacturing processes, including the design and testing of specific process improvements for certain medical device components. Such costs include salaries, payroll taxes, employee benefit costs, materials, supplies, depreciation on research equipment, and services provided by outside contractors.  All costs associated with research and development programs are expensed as incurred.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements



In the normal course of business, management evaluates all new accounting pronouncements issued by the Financial Accounting Standard Board (“FASB”), Securities and Exchange Commission (“SEC”), Emerging Issues Task Force (“EITF”), or other authoritative accounting bodies to determine the potential impact they may have on the Company’s Consolidated Financial Statements. Based upon this review, except as noted below, management does not expect any of the recently issued accounting pronouncements, which have not already been adopted, to have a material impact on the Company’s consolidated financial statements.



In August 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-15, “Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments”. This standard provides guidance for eight cash flow classification issues in current GAAP. The standard is effective for interim and annual reporting periods beginning after December 15, 2017.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In March 2016, the FASB issued ASU No. 2016-09, “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”.  The standard is intended to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures.  The standard is intended to reduce the cost and complexity with maintaining or improving the usefulness of information provided to users of financial statements. The standard is effective for interim and annual reporting periods beginning after December 15, 2016 and early adoption is permitted.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires companies to recognize all leases as assets and liabilities on the consolidated balance sheet. The standard retains a distinction between finance leases and operating leases, and the classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the current accounting literature. The result of retaining a distinction between finance leases and operating leases is that under the lessee accounting model in Topic 842, the effect of leases in a consolidated statement of comprehensive income and a consolidated statement of cash flows is largely unchanged from previous GAAP.  The amendments in this standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Earlier application is permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.



In November 2015, the FASB issued ASU No. 2015-17, "Balance Sheet Classification of Deferred Taxes" which requires the presentation of deferred tax assets and deferred tax liabilities, and any related valuation allowances, as noncurrent on the consolidated balance sheets.  The standard is effective for interim and annual reporting periods beginning after December 15, 2016 and early adoption is permitted.  The Company is currently evaluating the impact that the standard will have on its consolidated financial statements.



In July 2015, the FASB issued ASU No. 2015-11, “Simplifying the Measurement of Inventory,” which simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This standard is effective for public business entities for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements.



In April 2015, the FASB issued ASU No. 2015-03, "Simplifying the Presentation of Debt Issuance Costs". ASU 2015-03 requires that debt issuance costs be presented as a direct deduction from the carrying amount of the related debt liability, consistent with the presentation of debt discounts. Prior to the issuance of ASU 2015-03, debt issuance costs were required to be presented as deferred charge assets, separate from the related debt liability. ASU 2015-03 does not change the recognition and measurement requirements for debt issuance costs. The Company adopted ASU 2015-03 as of December 31, 2016, and applied its provisions retrospectively. The adoption of ASU 2015-03 did not have an impact on the Company’s financial results nor did it represent a material change to the consolidated balances sheets.



In August 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”, which requires management to assess a company’s ability to continue as a going concern and to provide related footnote disclosures in certain circumstances.  The standard provides guidance on evaluating whether there are conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern.  Substantial doubt exists when conditions or events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued.  The new standard is effective for the annual and interim periods ending after December 15, 2016.  The Company adopted the standard in 2016 and management’s assessment has determined that certain disclosures required are included in these statements (see Note 1). 



In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). The core principle behind ASU No. 2014-09 is that an entity should recognize revenue in an amount that reflects the consideration to which the entity expects to be entitled in exchange for delivering goods and services. This model involves a five-step process that includes identifying the contract with the customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations in the contract and recognizing revenue when the entity satisfies the performance obligations. This ASU allows two methods of adoption; a full retrospective approach where historical financial information is presented in accordance with the new standard, and a modified retrospective approach where this ASU is applied to the most current period presented in the financial statements. In August 2015, the FASB issued ASU No 2015-14 “Revenue from Contracts with Customers: Deferral of the Effective Date,” which deferred the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017, with earlier application permitted as of annual reporting periods beginning after December 15, 2016. The Company is currently assessing the financial impact of adopting ASU 2014-09 and the methods of adoption; however, given the scope of the new standard, the Company is currently unable to provide a reasonable estimate regarding the financial impact or which method of adoption will be elected.



Reclassification of prior period balances

Reclassification of prior period balances



Amounts in prior year financial statements are reclassified when necessary to conform to the current year presentation, most notably debt issuance costs in according with ASU 2015-03 as described more fully above.


Accounting Policies (Tables)
v6.14.0.7
Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Intangibles Assets



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

Estimated

 

December 31, 2016

 

December 31, 2015



 

Useful Life

 

 

 

 

Accumulated

 

 

 

 

 

 

 

Accumulated

 

 

 



 

(in years)

 

Gross

 

Amortization

 

Net

 

Gross

 

Amortization

 

Net

Patents and trademarks

 

10 

 

$

26,290 

 

$

9,738 

 

$

16,552 

 

$

26,290 

 

$

7,981 

 

$

18,309 

Patents and trademarks pending

 

 —

 

 

13,541 

 

 

 —

 

 

13,541 

 

 

336 

 

 

 —

 

 

336 

Total intangible assets

 

 

 

$

39,831 

 

$

9,738 

 

$

30,093 

 

$

26,626 

 

$

7,981 

 

$

18,645 




Inventories (Tables)
v6.14.0.7
Inventories (Tables)
12 Months Ended
Dec. 31, 2016
Inventories [Abstract]  
Inventories



 

 

 

 

 

 



 

 

 

 

 

 



 

December 31,

 

December 31,



 

2016

 

2015

Raw materials

 

$

1,027,474 

 

$

775,427 

Work-in-process

 

 

537,858 

 

 

265,113 

Finished goods

 

 

1,494,753 

 

 

1,078,172 

Total

 

$

3,060,085 

 

$

2,118,712 




Property, Plant and Equipment, net (Tables)
v6.14.0.7
Property, Plant and Equipment, net (Tables)
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment, net [Abstract]  
Property, Plant and Equipment, net



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Asset Lives

 

December 31,

 

December 31,



 

(in years)

 

2016

 

2015

Machinery and equipment

 

3

to

15

 

$

16,647,302 

 

$

15,168,377 

Building and improvements

 

5

to

25

 

 

3,986,715 

 

 

3,978,387 

Vehicles

 

3

to

5

 

 

90,713 

 

 

90,713 

Furniture, fixtures, computers and software

 

3

to

5

 

 

1,504,776 

 

 

1,437,692 

Construction in progress

 

 

 

 

 

 

402,099 

 

 

682,069 

Total property, plant and equipment

 

 

 

 

 

 

22,631,605 

 

 

21,357,238 

Less: accumulated depreciation

 

 

 

 

 

 

(16,190,694)

 

 

(14,731,169)

Property, plant and equipment, net

 

 

 

 

 

$

6,440,911 

 

$

6,626,069 




Debt (Tables)
v6.14.0.7
Debt (Tables)
12 Months Ended
Dec. 31, 2016
Debt [Abstract]  
Summary of Debt



 

 

 

 

 

 



 

 

 

 

 

 



 

December 31,

 

December 31,



 

2016

 

2015

Revolving line of credit

 

$

1,785,795 

 

$

1,511,495 

Equipment line of credit

 

$

102,500 

 

$

336,850 

Subordinated promissory notes, net of discount

 

$

432,011 

 

$

473,135 



 

 

 

 

 

 

Term notes payable:

 

 

 

 

 

 

Commercial term loan, net of debt issuance costs

 

$

2,398,870 

 

$

668,246 

Equipment term loans

 

 

 —

 

 

879,898 

Equipment notes

 

 

59,461 

 

 

116,214 

Total term notes payable

 

$

2,458,331 

 

$

1,664,358 



 

 

 

 

 

 

Total Debt

 

$

4,778,637 

 

$

3,985,838 



Future Maturities of Debt



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



2017

 

2018

 

2019

 

2020

 

2021

Thereafter

 

Total

Revolver

$

1,785,795 

 

$

 —

 

$

 —

 

$

 —

 

$

 —

 —

 

$

1,785,795 

Subordinated promissory notes

 

 —

 

 

450,000 

 

 

 —

 

 

 —

 

 

 —

 —

 

 

450,000 

Term debt and equipment notes

 

513,602 

 

 

493,337 

 

 

516,975 

 

 

541,616 

 

 

520,782  20,376 

 

 

2,606,688 

Total

$

2,299,397 

 

$

943,337 

 

$

516,975 

 

$

541,616 

 

$

520,782  20,376 

 

$

4,842,483 




Income Taxes (Tables)
v6.14.0.7
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2016
Income Taxes [Abstract]  
Income Tax Provision



 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Current:

 

 

 

 

 

 

Federal

 

$

 —

 

$

 —

State

 

 

 —

 

 

932 

Total current income taxes

 

 

 —

 

 

932 

Deferred:

 

 

 

 

 

 

Federal

 

 

 —

 

 

 —

State

 

 

 —

 

 

 —

Total deferred income taxes

 

 

 —

 

 

 —

Total income tax provision

 

$

 —

 

$

932 



Deferred Income Taxes



 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Deferred tax assets:

 

 

 

 

 

 



 

 

 

 

 

 

Net operating loss carryforwards

 

$

3,671,600 

 

$

3,221,000 

Federal and state tax credit carryforwards

 

 

493,800 

 

 

608,000 

Accruals and reserves

 

 

104,600 

 

 

117,300 

Stock based compensation

 

 

96,000 

 

 

89,800 

Patents and intangibles

 

 

51,100 

 

 

68,100 

Other long-term

 

 

500 

 

 

45,500 

     Total long-term deferred tax assets

 

 

4,417,600 

 

 

4,149,700 



 

 

 

 

 

 

Deferred tax valuation allowance

 

 

(3,812,900)

 

 

(3,472,300)

Deferred tax assets, net of allowance

 

 

604,700 

 

 

677,400 



 

 

 

 

 

 

Property, plant and equipment

 

 

(544,000)

 

 

(612,800)

Prepaid expenses

 

 

(60,700)

 

 

(64,600)

     Total deferred tax liabilities

 

 

(604,700)

 

 

(677,400)



 

 

 

 

 

 

Net deferred tax assets (liabilities)

 

$

 —

 

$

 —



Federal Income Taxes



 

 

 

 

 

 



 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Tax benefit computed at statutory rate

 

$

(250,071)

 

$

(145,442)

Increases (reductions) due to:

 

 

 

 

 

 

Change in valuation allowance

 

 

340,600 

 

 

230,300 

State income taxes, net of federal benefit

 

 

(27,646)

 

 

615 

Permanent differences

 

 

15,124 

 

 

479 

Tax credits (federal and state)

 

 

(32,577)

 

 

(108,194)

Differences on prior returns (federal and state)

 

 

(45,430)

 

 

23,174 

Income tax (benefit) provision

 

$

 —

 

$

932 




Shareholders' Equity (Tables)
v6.14.0.7
Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2016
Shareholders' Equity [Abstract]  
Fair Value of Option Grants



 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



 

Years Ended



 

December 31,



 

2016

 

2015

Expected option term

 

 

6.0 to 6.5

 

 

 

4.0 to 6.5

 

Expected volatility factor

 

 

23.7% to 24.4%

 

 

 

23.8% to 26.7%

 

Risk-free rate

 

 

.90% to .99%

 

 

 

.90% to 1.28%

 

Expected annual dividend yield

 

 

—%

 

 

 

—%

 



Stock Option Transactions



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

Weighted

 

 

 



 

 

 

Weighted

 

average

 

 

 



 

 

 

Average

 

remaining

 

Aggregate



 

Number of

 

Exercise

 

contractual

 

Intrinsic



 

options

 

Price

 

term (in years)

 

Value

Outstanding at December 31, 2015

 

184,500 

 

$

6.21 

 

6.80 

 

$

235,293 

Granted

 

45,000 

 

 

4.07 

 

 

 

 

 

Exercised

 

(15,000)

 

 

3.41 

 

 

 

 

 

Outstanding at December 31, 2016

 

214,500 

 

$

5.96 

 

7.12 

 

$

17,340 

Exercisable at December 31, 2016

 

109,495 

 

$

6.90 

 

5.47 

 

$

8,880 

Exercisable at December 31, 2015

 

83,500 

 

$

6.60 

 

4.73 

 

$

106,565 




Earnings Per Share (Tables)
v6.14.0.7
Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Calculation of basic and diluted EPS



 

 

 

 

 



 

 

 

 

 



Years Ended



December 31,



2016

 

2015

Loss from continuing operations

$

(712,462)

 

$

(791,776)

Income from discontinued operations, net of tax

 

 —

 

 

362,610 

Net loss available to common shareholders

$

(712,462)

 

$

(429,166)

Basic EPS:

 

 

 

 

 

Weighted average common shares outstanding

 

2,816,516 

 

 

2,784,757 

Earnings (loss) per share - basic

 

 

 

 

 

Continuing operations

$

(0.25)

 

$

(0.28)

Discontinued operations

 

 —

 

 

0.13 

Consolidated basic EPS

$

(0.25)

 

$

(0.15)

Diluted EPS:

 

 

 

 

 

Weighted average common shares outstanding

 

2,816,516 

 

 

2,784,757 

Assumed conversion of net common shares issuable
under stock option plans

 

 —

 

 

 —

Assumed conversion of net common shares issuable
under warrants

 

 —

 

 

 —

Weighted average common and common equivalent shares
outstanding, diluted

 

2,816,516 

 

 

2,784,757 

Earnings (loss) per share - diluted

 

 

 

 

 

Continuing operations

$

(0.25)

 

$

(0.28)

Discontinued operations

 

 —

 

 

0.13 

Consolidated diluted EPS

$

(0.25)

 

$

(0.15)




Industry and Geographic Segments (Tables)
v6.14.0.7
Industry and Geographic Segments (Tables)
12 Months Ended
Dec. 31, 2016
Industry and Geographic Segments [Abstract]  
Sales by Industry Segments



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Revenue for the Years Ended December 31,



 

2016

 

   %

 

2015

 

%

Medical

 

$

14,543,315 

 

74 

 

$

16,770,788 

 

78 

Automotive/Industrial

 

 

3,787,312 

 

19 

 

 

2,839,926 

 

13 

Consumer Products

 

 

744,738 

 

 

 

647,190 

 

Military and Law Enforcement

 

 

383,254 

 

 

 

943,603 

 

Other

 

 

179,598 

 

 

 

293,677 

 

Total

 

$

19,638,217 

 

100 

 

$

21,495,184 

 

100 



Sales by Geographic Market



 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 



 

Revenue for the Years Ended December 31,



 

2016

 

   %

 

2015

 

%

United States 

 

$

12,206,761 

 

62 

 

$

13,199,188 

 

61 

Asia

 

 

4,283,180 

 

22 

 

 

4,774,910 

 

22 

Europe 

 

 

1,677,100 

 

 

 

1,662,318 

 

Canada 

 

 

1,268,817 

 

 

 

1,607,445 

 

Other 

 

 

202,359 

 

 

 

251,323 

 

Total 

 

$

19,638,217 

 

100 

 

$

21,495,184 

 

100 




Description of Business (Details)
v6.14.0.7
Description of Business (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Description of Business [Abstract]    
Percent of revenue derived from exports 40.00%hrt_PercentOfRevenueDerivedFromExports  
Outstanding balance, line of credit $ 1,785,795us-gaap_LineOfCredit $ 1,511,495us-gaap_LineOfCredit

Accounting Policies (Narrative) (Details)
v6.14.0.7
Accounting Policies (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Concentration Risk [Line Items]    
General revenue recognition period 3 years  
Impairment of intangibles $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived $ 118,318us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Amortization expense 1,757us-gaap_AmortizationOfIntangibleAssets 3,235us-gaap_AmortizationOfIntangibleAssets
Estimated future amortization 1,757hrt_EstimatedFutureAmortization  
Interest or penalties related to unrecognized tax positions 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense  
Accumulated other comprehensive income 0us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax 42,502us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Sales Revenue, Net [Member]    
Concentration Risk [Line Items]    
Number of customers, concentration of credit risk 2hrt_NumberOfCustomersConcentrationOfCreditRisk
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
2hrt_NumberOfCustomersConcentrationOfCreditRisk
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
Sales Revenue, Net [Member] | Customer 1 [Member]    
Concentration Risk [Line Items]    
Concentration of credit risk, percentage 19.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer1Member
16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer1Member
Sales Revenue, Net [Member] | Customer 2 [Member]    
Concentration Risk [Line Items]    
Concentration of credit risk, percentage 12.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer2Member
13.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer2Member
Accounts Receivable [Member]    
Concentration Risk [Line Items]    
Number of customers, concentration of credit risk 5hrt_NumberOfCustomersConcentrationOfCreditRisk
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
2hrt_NumberOfCustomersConcentrationOfCreditRisk
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
Concentration of credit risk, percentage 46.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
51.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
Accounts Receivable [Member] | Customer 1 [Member]    
Concentration Risk [Line Items]    
Concentration of credit risk, percentage 26.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer1Member
9.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer1Member
Accounts Receivable [Member] | Two Customers [Member]    
Concentration Risk [Line Items]    
Number of customers, concentration of credit risk 2hrt_NumberOfCustomersConcentrationOfCreditRisk
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= hrt_TwoCustomersMember
 
Accounts Receivable [Member] | Customer 2 [Member]    
Concentration Risk [Line Items]    
Concentration of credit risk, percentage 7.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer2Member
9.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= hrt_Customer2Member
Patents [Member]    
Concentration Risk [Line Items]    
Impairment of intangibles 103,287us-gaap_ImpairmentOfIntangibleAssetsFinitelived
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Trade Names [Member]    
Concentration Risk [Line Items]    
Impairment of intangibles $ 15,031us-gaap_ImpairmentOfIntangibleAssetsFinitelived
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
 

Accounting Policies (Intangible Assets) (Details)
v6.14.0.7
Accounting Policies (Intangible Assets) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Gross $ 39,831us-gaap_FiniteLivedIntangibleAssetsGross $ 26,626us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization 9,738us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization 7,981us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Net 30,093us-gaap_FiniteLivedIntangibleAssetsNet 18,645us-gaap_FiniteLivedIntangibleAssetsNet
Patents and Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (in years) 10 years  
Gross 26,290us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
26,290us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
Accumulated Amortization 9,738us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
7,981us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
Net 16,552us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
18,309us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksMember
Patents and Trademarks Pending [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross 13,541us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksNotYetInServiceMember
336us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksNotYetInServiceMember
Net $ 13,541us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksNotYetInServiceMember
$ 336us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= hrt_PatentsAndTrademarksNotYetInServiceMember

Inventories (Details)
v6.14.0.7
Inventories (Details) (USD $)
Dec. 31, 2016
Dec. 31, 2015
Inventories [Abstract]    
Raw materials $ 1,027,474us-gaap_InventoryRawMaterialsNetOfReserves $ 775,427us-gaap_InventoryRawMaterialsNetOfReserves
Work-in-process 537,858us-gaap_InventoryWorkInProcessNetOfReserves 265,113us-gaap_InventoryWorkInProcessNetOfReserves
Finished goods 1,494,753us-gaap_InventoryFinishedGoodsNetOfReserves 1,078,172us-gaap_InventoryFinishedGoodsNetOfReserves
Total 3,060,085us-gaap_InventoryNet 2,118,712us-gaap_InventoryNet
Silver inventory $ 521,746hrt_SilverInventory $ 313,738hrt_SilverInventory

Property, Plant and Equipment, net (Narrative) (Details)
v6.14.0.7
Property, Plant and Equipment, net (Narrative) (Details) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Jan. 12, 2017
Jan. 31, 2017
Dec. 31, 2015
item
sqft
Property, Plant and Equipment [Line Items]            
Depreciation expense   $ 1,539,249us-gaap_Depreciation $ 1,461,353us-gaap_Depreciation      
Assets held for sale, net 688,750us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup 688,750us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup 665,000us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup     665,000us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup
Escrow Deposit 25,000us-gaap_EscrowDeposit 25,000us-gaap_EscrowDeposit        
Increase in purchsae price 25,000hrt_IncreaseInPurchsaePrice          
Extension fee monthly payment amount 4,000hrt_ExtensionFeeMonthlyPaymentAmount          
Extension fee monthly payment amount, additional extension 7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension          
Additional extension period for purchase (in days)   150 days        
Subsequent Event [Member]            
Property, Plant and Equipment [Line Items]            
Extension fee monthly payment amount       4,000hrt_ExtensionFeeMonthlyPaymentAmount
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
4,000hrt_ExtensionFeeMonthlyPaymentAmount
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
 
Extension fee monthly payment amount, additional extension       7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
 
Unoccupied Building [Member]            
Property, Plant and Equipment [Line Items]            
Other income (expense), net   $ 25,000us-gaap_OtherNonoperatingIncome
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= hrt_UnoccupiedBuildingMember
       
Fitchburg, Massachusetts [Member]            
Property, Plant and Equipment [Line Items]            
Number of unoccupied buildings with letter of intent to sale           2hrt_NumberOfUnoccupiedBuildingsWithLetterOfIntentToSale
/ us-gaap_StatementGeographicalAxis
= hrt_FitchburgMassachusettsMember
Area of building     52,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_StatementGeographicalAxis
= hrt_FitchburgMassachusettsMember
    52,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_StatementGeographicalAxis
= hrt_FitchburgMassachusettsMember

Property, Plant and Equipment, net (Property, Plant and Equipment, net) (Details)
v6.14.0.7
Property, Plant and Equipment, net (Property, Plant and Equipment, net) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment    
Total property, plant and equipment 22,631,605us-gaap_PropertyPlantAndEquipmentGross $ 21,357,238us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation (16,190,694)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (14,731,169)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, plant and equipment, net 6,440,911us-gaap_PropertyPlantAndEquipmentNet 6,626,069us-gaap_PropertyPlantAndEquipmentNet
Machinery and Equipment [Member]    
Property, Plant and Equipment    
Total property, plant and equipment 16,647,302us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
15,168,377us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Building and Improvements [Member]    
Property, Plant and Equipment    
Total property, plant and equipment 3,986,715us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
3,978,387us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
Vehicles [Member]    
Property, Plant and Equipment    
Total property, plant and equipment 90,713us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember
90,713us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember
Furniture, Fixtures, Computers and Software [Member]    
Property, Plant and Equipment    
Total property, plant and equipment 1,504,776us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
1,437,692us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Construction in Progress [Member]    
Property, Plant and Equipment    
Total property, plant and equipment 402,099us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 682,069us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
Maximum [Member] | Machinery and Equipment [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 15 years  
Maximum [Member] | Building and Improvements [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 25 years  
Maximum [Member] | Vehicles [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 5 years  
Maximum [Member] | Furniture, Fixtures, Computers and Software [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 5 years  
Minimum [Member] | Machinery and Equipment [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 3 years  
Minimum [Member] | Building and Improvements [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 5 years  
Minimum [Member] | Vehicles [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 3 years  
Minimum [Member] | Furniture, Fixtures, Computers and Software [Member]    
Property, Plant and Equipment    
Asset Lives (in years) 3 years  

Debt (Bank Debt Narrative) (Details)
v6.14.0.7
Debt (Bank Debt Narrative) (Details) (USD $)
1 Months Ended 12 Months Ended
Nov. 30, 2016
item
Dec. 31, 2016
Dec. 31, 2015
item
Jun. 30, 2016
Debt Instrument [Line Items]        
Number of Equipment Term Loans 4hrt_NumberOfDebtInstruments   2hrt_NumberOfDebtInstruments  
Proceeds from term note payable   $ 500,000hrt_ProceedsFromTermNotesPayable $ 0hrt_ProceedsFromTermNotesPayable  
Outstanding balance, line of credit   1,785,795us-gaap_LineOfCredit 1,511,495us-gaap_LineOfCredit  
Debt issuance costs   45,858us-gaap_DeferredFinanceCostsNet 45,929us-gaap_DeferredFinanceCostsNet  
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Percent Borrowable of net Elegible Recievable   80.00%hrt_PercentBorrowableOfNetElegibleRecievableRevolvingLoan
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Percent Borrowable of net Eligible Raw Materials Inventory   50.00%hrt_PercentBorrowableOfNetEligibleRawMaterialsInventoryRevolvingLoan
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Revolver, interest rate at end of period   4.00%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Amount available under line of credit facility   727,156us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Maximum borrowing capacity 500,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
     
Revolving Credit Facility [Member] | Prime Rate [Member]        
Debt Instrument [Line Items]        
Spread on variable rate   0.25%us-gaap_DerivativeBasisSpreadOnVariableRate
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
   
Commercial Term Loan [Member]        
Debt Instrument [Line Items]        
Number of debt instruments converted during period 1hrt_NumberOfDebtInstrumentsConvertedDuringPeriod
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
     
Debt instrument, interest rate 4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
     
Debt maturity period   5 years    
Approximate monthly principal and interest payment 46,500us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
     
Debt instrument, face amount 2,481,943us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
     
Equipment Term Loan [Member]        
Debt Instrument [Line Items]        
Number of debt instruments converted during period 3hrt_NumberOfDebtInstrumentsConvertedDuringPeriod
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoanMember
     
Equipment Line Of Credit 2013 [Member] | Equipment Line of Credit [Member]        
Debt Instrument [Line Items]        
Line of credit, draw period   1 year    
Line of Credit Facility, Expiration Period   5 years    
Maximum borrowing capacity   1,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2013Member
   
Outstanding balance, line of credit 380,791us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2013Member
740,999us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2013Member
   
Equipment Line Of Credit 2014 [Member] | Equipment Line of Credit [Member]        
Debt Instrument [Line Items]        
Line of credit, draw period   1 year    
Line of Credit Facility, Expiration Period   5 years    
Maximum borrowing capacity   1,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2014Member
   
Outstanding balance, line of credit 315,272us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2014Member
415,785us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2014Member
   
Equipment Term Loan 2015 [Member]        
Debt Instrument [Line Items]        
Debt outstanding, principal and accrued interest 832,420hrt_DebtOutstandingPrincipalAndAccruedInterest
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoan2015Member
     
Equipment Term Loan 2015 [Member] | Equipment Line of Credit [Member]        
Debt Instrument [Line Items]        
Outstanding balance, line of credit       881,701us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoan2015Member
Equipment Line Of Credit 2015 [Member] | Equipment Line of Credit [Member]        
Debt Instrument [Line Items]        
Line of credit, draw period   1 year    
Maximum borrowing capacity     1,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2015Member
 
Outstanding balance, line of credit     336,850us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentLineOfCredit2015Member
 
Equipment Term Loan 2016 [Member] | Equipment Line of Credit [Member]        
Debt Instrument [Line Items]        
Line of credit, draw period   1 year    
Outstanding balance, line of credit 1,000,000us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoan2016Member
$ 102,500us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoan2016Member
   
Line of credit, maturity period   6 years    
Earliest repayment period, from date of loan   1 year    
Equipment Term Loan 2016 [Member] | Equipment Line of Credit [Member] | Prime Rate [Member]        
Debt Instrument [Line Items]        
Spread on variable rate   0.25%us-gaap_DerivativeBasisSpreadOnVariableRate
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoan2016Member
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
   

Debt (Other Debt Narrative) (Details)
v6.14.0.7
Debt (Other Debt Narrative) (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended
Nov. 30, 2016
item
Dec. 31, 2016
Dec. 31, 2015
item
Dec. 31, 2014
Jan. 31, 2013
item
Oct. 31, 2016
item
Dec. 31, 2013
Debt Instruments [Line Items]              
Number Of Debt Instruments 4hrt_NumberOfDebtInstruments   2hrt_NumberOfDebtInstruments        
Payment on subordinated debt   $ 50,000us-gaap_RepaymentsOfSubordinatedDebt $ 0us-gaap_RepaymentsOfSubordinatedDebt        
Number of warrants issued   100,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights          
Issuance of common stock from treasury, shares   15,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued 23,300us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued 30,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued      
Warrants unexercised   70,000us-gaap_ClassOfWarrantOrRightOutstanding 70,000us-gaap_ClassOfWarrantOrRightOutstanding       100,000us-gaap_ClassOfWarrantOrRightOutstanding
Subordinated promissory notes, exercise price of warrants   $ 3.51us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1          
REF Securities, LLP [Member]              
Debt Instruments [Line Items]              
Number of warrants issued   20,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_RefSecuritiesLlpMember
         
Chambers Medical Foundation [Member]              
Debt Instruments [Line Items]              
Number of warrants issued   20,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_ChambersMedicalFoundationMember
         
Issuance of common stock from treasury, shares       20,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_ChambersMedicalFoundationMember
     
E.P. Marinos [Member]              
Debt Instruments [Line Items]              
Number of warrants issued   10,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_E.p.MarinosMember
         
Warrants [Member]              
Debt Instruments [Line Items]              
Issuance of common stock from treasury, shares   0us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
0us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
30,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
     
Term Debt And Equipment Notes [Member] | Equipment Term Loans [Member]              
Debt Instruments [Line Items]              
Number Of Debt Instruments         2hrt_NumberOfDebtInstruments
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
   
Debt instrument, face amount         272,500us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
   
Debt instrument, interest rate   4.66%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
         
Approximate monthly principal and interest payment   5,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
         
Equipment notes, maturity period   5 years          
Subordinated Promissory Notes [Member]              
Debt Instruments [Line Items]              
Debt instrument, face amount   450,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
        500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Debt instrument, maturity date   Dec. 31, 2018          
Interest rate   10.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
12.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
10.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
    10.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Payment on subordinated debt   50,000us-gaap_RepaymentsOfSubordinatedDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
         
Number of investors in the private offering           7hrt_NumberOfInvestorsInPrivateOffering
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
 
Number of investors, maturity date extended           6hrt_NumberOfInvestorsMaturityDateExtended
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
 
Number of investors, maturity date not extended   1hrt_NumberOfInvestorsMaturityDateNotExtended
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
         
Debt, fair value   18,310us-gaap_LongTermDebtFairValue
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
         
Number of largest beneficial owners   2hrt_NumberOfLargestBeneficialOwners
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
         
Subordinated Promissory Notes [Member] | REF Securities, LLP [Member]              
Debt Instruments [Line Items]              
Percent of beneficial owner of company's common stock   13.00%hrt_PercentOfBeneficialOwnerOfCompanySCommonStock
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_RefSecuritiesLlpMember
         
Invested amount in private offering   100,000hrt_InvestedAmountInPrivateOffering
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_RefSecuritiesLlpMember
         
Subordinated Promissory Notes [Member] | Chambers Medical Foundation [Member]              
Debt Instruments [Line Items]              
Percent of beneficial owner of company's common stock   10.00%hrt_PercentOfBeneficialOwnerOfCompanySCommonStock
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_ChambersMedicalFoundationMember
         
Invested amount in private offering   100,000hrt_InvestedAmountInPrivateOffering
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_ChambersMedicalFoundationMember
         
Subordinated Promissory Notes [Member] | E.P. Marinos [Member]              
Debt Instruments [Line Items]              
Invested amount in private offering   50,000hrt_InvestedAmountInPrivateOffering
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_E.p.MarinosMember
         
Subordinated Promissory Notes [Member] | Three Related Parties [Member]              
Debt Instruments [Line Items]              
Debt instrument, face amount   $ 250,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hrt_ThreeRelatedPartiesMember
         

Debt (Summary of Debt) (Details)
v6.14.0.7
Debt (Summary of Debt) (Details) (USD $)
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Revolving line of credit $ 1,785,795us-gaap_LineOfCredit $ 1,511,495us-gaap_LineOfCredit
Equipment line of credit 102,500hrt_EquipmentLineOfCredit 336,850hrt_EquipmentLineOfCredit
Subordinated promissory notes, net of discount 432,011us-gaap_SubordinatedDebt 473,135us-gaap_SubordinatedDebt
Total Debt 4,778,637us-gaap_DebtLongtermAndShorttermCombinedAmount 3,985,838us-gaap_DebtLongtermAndShorttermCombinedAmount
Term Debt And Equipment Notes [Member]    
Debt Instrument [Line Items]    
Total term notes payable 2,458,331us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
1,664,358us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
Term Debt And Equipment Notes [Member] | Commercial Term Loan [Member]    
Debt Instrument [Line Items]    
Total term notes payable 2,398,870us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
668,246us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hrt_CommercialTermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
Term Debt And Equipment Notes [Member] | Equipment Term Loans [Member]    
Debt Instrument [Line Items]    
Total term notes payable   879,898us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentTermLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
Term Debt And Equipment Notes [Member] | Equipment Notes [Member]    
Debt Instrument [Line Items]    
Total term notes payable $ 59,461us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
$ 116,214us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hrt_EquipmentNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember

Debt (Future Minimum of Debt) (Details)
v6.14.0.7
Debt (Future Minimum of Debt) (Details) (USD $)
Dec. 31, 2016
Future maturities of debt  
2017 $ 2,299,397us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2018 943,337us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2019 516,975us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2020 541,616us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2021 520,782us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Thereafter 20,376us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Long-term Debt, Total 4,842,483us-gaap_LongTermDebt
Revolving Credit Facility [Member]  
Future maturities of debt  
2017 1,785,795us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
2018 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
2019 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
2020 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
2021 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Thereafter 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Long-term Debt, Total 1,785,795us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Subordinated Promissory Notes [Member]  
Future maturities of debt  
2017 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
2018 450,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
2019 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
2020 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
2021 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Thereafter 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Long-term Debt, Total 450,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Term Debt And Equipment Notes [Member]  
Future maturities of debt  
2017 513,602us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
2018 493,337us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
2019 516,975us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
2020 541,616us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
2021 520,782us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
Thereafter 20,376us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember
Long-term Debt, Total $ 2,606,688us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember

Income Taxes (Narrative) (Details)
v6.14.0.7
Income Taxes (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Line Items]    
Income tax provision   $ 932us-gaap_IncomeTaxExpenseBenefit
Federal statutory income tax rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate  
Federal Tax Authority [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards 9,124,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember
 
Tax credit carryforwards 305,800us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember
 
State Jurisdiction [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards 10,780,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember
 
Tax credit carryforwards 188,000us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember
 

Income Taxes (Income Tax Provision) (Details)
v6.14.0.7
Income Taxes (Income Tax Provision) (Details) (USD $)
12 Months Ended
Dec. 31, 2015
Current:  
State $ 932us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Total current income taxes 932us-gaap_CurrentIncomeTaxExpenseBenefit
Income tax provision $ 932us-gaap_IncomeTaxExpenseBenefit

Income Taxes (Deferred Income Taxes) (Details)
v6.14.0.7
Income Taxes (Deferred Income Taxes) (Details) (USD $)
Dec. 31, 2016
Dec. 31, 2015
Deferred income taxes:    
Net operating loss carryforwards $ 3,671,600us-gaap_DeferredTaxAssetsOperatingLossCarryforwards $ 3,221,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Federal and state tax credit carryforward 493,800us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 608,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Accruals and reserves 104,600us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities 117,300us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Stock compensation 96,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 89,800us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Patents and intangibles 51,100hrt_DeferredTaxAssetPatentsAndIntangibles 68,100hrt_DeferredTaxAssetPatentsAndIntangibles
Other long-term 500us-gaap_DeferredTaxAssetsOther 45,500us-gaap_DeferredTaxAssetsOther
Total long-term deferred tax assets 4,417,600us-gaap_DeferredTaxAssetsGross 4,149,700us-gaap_DeferredTaxAssetsGross
Deferred tax valuation allowance (3,812,900)us-gaap_DeferredTaxAssetsValuationAllowance (3,472,300)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred tax assets, net of allowance 604,700us-gaap_DeferredTaxAssetsNet 677,400us-gaap_DeferredTaxAssetsNet
Prepaid expenses (60,700)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses (64,600)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Property, plant and equipment (544,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment (612,800)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Total deferred tax liabilities (604,700)us-gaap_DeferredIncomeTaxLiabilities (677,400)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax assets (liabilities) $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet

Income Taxes (Federal Income Taxes) (Details)
v6.14.0.7
Income Taxes (Federal Income Taxes) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Abstract]    
Tax benefit computed at statutory rate $ (250,071)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ (145,442)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Change in valuation allowance 340,600us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount 230,300us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
State income taxes, net of federal benefit (27,646)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 615us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Permanent differences 15,124hrt_PermanentDifferences 479hrt_PermanentDifferences
Tax credits (federal and state) (32,577)us-gaap_IncomeTaxReconciliationTaxCredits (108,194)us-gaap_IncomeTaxReconciliationTaxCredits
Differences on prior returns (federal and state) (45,430)hrt_IncomeTaxReconciliationDifferencesOnPriorReturnsFederalAndState 23,174hrt_IncomeTaxReconciliationDifferencesOnPriorReturnsFederalAndState
Income tax provision   $ 932us-gaap_IncomeTaxExpenseBenefit

Employee Benefit Plans (Details)
v6.14.0.7
Employee Benefit Plans (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Employee Benefit Plans [Abstract]    
Maximum annual contribution per employee, percent of eligible compensation 90.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent  
Matching 401K contribution $ 41,072us-gaap_DefinedContributionPlanCostRecognized $ 47,858us-gaap_DefinedContributionPlanCostRecognized

Commitments and Contingencies (Details)
v6.14.0.7
Commitments and Contingencies (Details) (USD $)
12 Months Ended
Dec. 31, 2016
agreement
Commitments and Contingencies [Abstract]  
Number of operating lease agreements 2hrt_NumberOfOperatingLeaseAgreements
Operating lease payments due in 2017 $ 24,036us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Operating lease payments due in 2018 $ 24,036us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears

Shareholders' Equity (Narrative) (Details)
v6.14.0.7
Shareholders' Equity (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of common stock from treasury, shares 15,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued 23,300us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued 30,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued  
Dividends declared or paid $ 0us-gaap_DividendsPayableCurrentAndNoncurrent $ 0us-gaap_DividendsPayableCurrentAndNoncurrent    
Subordinated promissory notes, exercise price of warrants $ 3.51us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1      
Warrants unexercised 70,000us-gaap_ClassOfWarrantOrRightOutstanding 70,000us-gaap_ClassOfWarrantOrRightOutstanding   100,000us-gaap_ClassOfWarrantOrRightOutstanding
Options outstanding 214,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 184,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber    
Shares available for future grants 273,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant      
Number of options, granted in period 45,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 62,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross    
Intrinsic value of options exercised 30,600us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 60,197us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue    
Number of options, exercised in period 15,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised      
Share-based compensation expense 47,256us-gaap_AllocatedShareBasedCompensationExpense 29,178us-gaap_AllocatedShareBasedCompensationExpense    
Unrecognized compensation costs related to non-vested shares $ 134,354us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized $ 134,160us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized    
Unrecognized compensation costs, recognized over weighted average period 2 years 8 months 12 days      
Weighted average grant date fair value $ 1.05us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue      
The 2010 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares authorized for issuance 500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= hrt_EquityIncentivePlan2010Member
     
The 2010 Plan [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Contractual Term 10 years      
Vesting period 5 years      
The 2010 Plan [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Treasury stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of common stock from treasury, shares 15,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
23,300us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
   
Warrants [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of common stock from treasury, shares 0us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
0us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
30,000us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
 

Shareholders' Equity (Fair Value of Option Grants) (Details)
v6.14.0.7
Shareholders' Equity (Fair Value of Option Grants) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Minimum [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Expected option term, years 6 years 4 years
Expected volatility factor 23.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
23.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Risk-free rate 0.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Maximum [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Expected option term, years 6 years 6 months 6 years 6 months
Expected volatility factor 24.40%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
26.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Risk-free rate 0.99%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
1.28%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember

Shareholders' Equity (Stock Option Transactions) (Details)
v6.14.0.7
Shareholders' Equity (Stock Option Transactions) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Shareholders' Equity [Abstract]    
Number of options, outstanding, beginning balance 184,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Weighted average exercise price, options outstanding $ 5.96us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice $ 6.21us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Weighted average remaining contractual term (in years), options outstanding 7 years 1 month 13 days 6 years 9 months 18 days
Aggregate intrinsic value, options outstanding $ 17,340us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue $ 235,293us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Number of options, granted in period 45,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 62,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Weighted average exercise price, options granted in period $ 4.07us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice  
Number of options, exercised in period (15,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised  
Weighted average exercise price, options exercised in period $ 3.41us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice  
Number of options, outstanding, ending balance 214,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 184,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Number of options, exercisable 109,495us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions 83,500us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Weighted average exercise price, options exercisable $ 6.90us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 6.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Weighted average remaining contractual term (in years), options exercisable 5 years 5 months 19 days 4 years 8 months 23 days
Aggregate intrinsic value, options exercisable $ 8,880us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue $ 106,565us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

Earnings Per share (Narrative) (Details)
v6.14.0.7
Earnings Per share (Narrative) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Warrants to purchase outstanding 70,000us-gaap_ClassOfWarrantOrRightOutstanding 70,000us-gaap_ClassOfWarrantOrRightOutstanding 100,000us-gaap_ClassOfWarrantOrRightOutstanding
Employee Stock Option [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive shares 214,500us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
184,500us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
 

Earnings Per share (Calculation of basic and diluted EPS) (Details)
v6.14.0.7
Earnings Per share (Calculation of basic and diluted EPS) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share [Abstract]    
Loss from continuing operations $ (712,462)us-gaap_IncomeLossFromContinuingOperations $ (791,776)us-gaap_IncomeLossFromContinuingOperations
Income from discontinued operations, net of tax 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 362,610us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net loss $ (712,462)us-gaap_NetIncomeLoss $ (429,166)us-gaap_NetIncomeLoss
Basic EPS:    
Weighted average common shares outstanding 2,816,516us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 2,784,757us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Earnings (loss) per share - basic    
Continuing operations $ (0.25)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare $ (0.28)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Discontinued operations $ 0.00us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare $ 0.13us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
Earnings (loss) per share - basic $ (0.25)us-gaap_EarningsPerShareBasic $ (0.15)us-gaap_EarningsPerShareBasic
Diluted EPS:    
Weighted average common shares outstanding 2,816,516us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 2,784,757us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Assumed conversion of net common shares issuable under stock option plans 0hrt_AssumedConversionOfNetCommonSharesIssuableUnderStockOptions 0hrt_AssumedConversionOfNetCommonSharesIssuableUnderStockOptions
Assumed conversion of net common shares issuable under warrants 0hrt_AssumedConversionOfNetCommonSharesIssuableUnderWarrants 0hrt_AssumedConversionOfNetCommonSharesIssuableUnderWarrants
Weighted average common and common equivalent shares outstanding, diluted 2,816,516us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 2,784,757us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Earnings (loss) per share - diluted    
Continuing operations $ (0.25)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.28)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Discontinued operations $ 0.00us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare $ 0.13us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
Earnings (loss) per share - dilutes $ (0.25)us-gaap_EarningsPerShareDiluted $ (0.15)us-gaap_EarningsPerShareDiluted

Industry and Geographic Segments (Sales by Industry Segments) (Details)
v6.14.0.7
Industry and Geographic Segments (Sales by Industry Segments) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
segment
Dec. 31, 2015
Segment Reporting Information [Line Items]    
Revenues $ 19,638,217us-gaap_Revenues $ 21,495,184us-gaap_Revenues
Revenue by Percent 100.00%hrt_RevenueByPercent 100.00%hrt_RevenueByPercent
Number of operating segments 1us-gaap_NumberOfOperatingSegments  
Medical [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Revenues 14,543,315us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MedicalMember
16,770,788us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MedicalMember
Revenue by Percent 74.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MedicalMember
78.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MedicalMember
Automotive/Industrial [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Revenues 3,787,312us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_AutomotiveMember
2,839,926us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_AutomotiveMember
Revenue by Percent 19.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_AutomotiveMember
13.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_AutomotiveMember
Consumer Products [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Revenues 744,738us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_ConsumerProductsMember
647,190us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_ConsumerProductsMember
Revenue by Percent 4.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_ConsumerProductsMember
4.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_ConsumerProductsMember
Military and Law Enforcement [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Revenues 383,254us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MilitaryAndLawEnforcementMember
943,603us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MilitaryAndLawEnforcementMember
Revenue by Percent 2.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MilitaryAndLawEnforcementMember
4.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_MilitaryAndLawEnforcementMember
Other Product/Service [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Revenues $ 179,598us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_OtherProductServiceMember
$ 293,677us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_OtherProductServiceMember
Revenue by Percent 1.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_OtherProductServiceMember
1.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= hrt_OtherProductServiceMember

Industry and Geographic Segments (Sales by Geographic Market) (Details)
v6.14.0.7
Industry and Geographic Segments (Sales by Geographic Market) (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 19,638,217us-gaap_Revenues $ 21,495,184us-gaap_Revenues
Revenue by Percent 100.00%hrt_RevenueByPercent 100.00%hrt_RevenueByPercent
United States [Member] | Operating Segments [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 12,206,761us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
13,199,188us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
Revenue by Percent 62.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
61.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
Asia [Member] | Operating Segments [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 4,283,180us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember
4,774,910us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember
Revenue by Percent 22.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember
22.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember
Europe [Member] | Operating Segments [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 1,677,100us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
1,662,318us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Revenue by Percent 9.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
9.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Canada [Member] | Operating Segments [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues 1,268,817us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_CA
1,607,445us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_CA
Revenue by Percent 6.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_CA
7.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_CA
Other Geographic Markets [Member] | Operating Segments [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues $ 202,359us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= hrt_OtherGeographicMarketsMember
$ 251,323us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= hrt_OtherGeographicMarketsMember
Revenue by Percent 1.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= hrt_OtherGeographicMarketsMember
1.00%hrt_RevenueByPercent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= hrt_OtherGeographicMarketsMember

Discontinued Operations (Details)
v6.14.0.7
Discontinued Operations (Details) (USD $)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Discontinued Operations [Abstract]    
Income from discontinued operations, net of tax $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity $ 362,610us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

Subsequent Events (Details)
v6.14.0.7
Subsequent Events (Details) (USD $)
1 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2016
Jan. 12, 2017
Jan. 31, 2017
Subsequent Event [Line Items]      
Extension fee monthly payment amount $ 4,000hrt_ExtensionFeeMonthlyPaymentAmount    
Extension Fee Monthly Payment Amount, Additional Extension 7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension    
Subsequent Event [Member]      
Subsequent Event [Line Items]      
Extension fee monthly payment amount   4,000hrt_ExtensionFeeMonthlyPaymentAmount
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
4,000hrt_ExtensionFeeMonthlyPaymentAmount
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Extension Fee Monthly Payment Amount, Additional Extension   $ 7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
$ 7,500hrt_ExtensionFeeMonthlyPaymentAmountAdditionalExtension
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember