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Related Party Transactions (Details Textual) (USD $)
2 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Related Party Transaction [Line Items]      
Costs and Expenses, Related Party $ 2,000,000us-gaap_CostsAndExpensesRelatedParty    
Harvard Bioscience Inc [Member]      
Related Party Transaction [Line Items]      
Costs and Expenses, Related Party 100,000us-gaap_CostsAndExpensesRelatedParty
/ dei_LegalEntityAxis
= hart_HarvardBioscienceIncMember
200,000us-gaap_CostsAndExpensesRelatedParty
/ dei_LegalEntityAxis
= hart_HarvardBioscienceIncMember
 
Transition Services Agreement [Member]      
Related Party Transaction [Line Items]      
Operating Leases, Rent Expense   $ 169,000us-gaap_LeaseAndRentalExpense
/ us-gaap_FinancialInstrumentAxis
= hart_TransitionServicesAgreementMember
$ 26,000us-gaap_LeaseAndRentalExpense
/ us-gaap_FinancialInstrumentAxis
= hart_TransitionServicesAgreementMember