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Note 8 - Derivatives - The Effect of Derivatives Designated as Cash Flow Hedging Instruments (Details) Note 9 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) Note 10 - Capital Stock and Stock-based Compensation - Stock Option and Restricted Stock Unit Activity (Details) Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Note 10 - Capital Stock and Stock-based Compensation - Stock-based Compensation Expense (Details) Note 10 - Capital Stock and Stock-based Compensation - Black Scholes Assumptions (Details) Note 10 - Capital Stock and Stock-based Compensation - Earnings (Loss) Per Share (Details) Note 11 - Revenues - Disaggregation of Revenue (Details) Service, Maintenance, and Warranty Contracts [Member] Represents service, maintenance, and warranty contracts. Instruments, Equipment, Software, and Accessories [Member] Represents instruments, equipment, software, and accessories. 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Restricted Stock Units (RSUs) [Member] Finite-Lived Intangible Assets, Gross Swingline Loan Facility [Member] Information pertaining to the swingline loan sub-facility. hbio_StockIssuedDuringPeriodSharesIssuedForSettlement Stock Issued During Period, Shares, Issued For Settlement (in shares) Amount of stock shares issued during period for settlement. Share-Based Payment Arrangement, Option [Member] The ABR Loan [Member] Information pertaining to the ABR loan. hbio_PreferredStockBookValueInclusiveOfAccruedDividends Preferred Stock, Book Value, Inclusive of Accrued Dividends Represents the book value of preferred stock inclusive of accrued dividends. Effect of change in currency translation Greater China [Member] Represents greater China. 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Customer credits hbio_ContractWithCustomerLiabilityCustomerAdvancesCurrent Represents current customer advance for contract with customer liabiltiiy. Changes in operating assets and liabilities: Risks and Uncertainties Policy [Policy Text Block] Disclosure of accounting policy for risks and uncertainties. hbio_LiabilityForContingentIndemnificationObligations Liability for Contingent Indemnification Obligations Represents liability for contingent indemnification obligations. Amortization of deferred financing costs us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Operating lease liabilities, long-term Operating lease liabilities Schedule of Inventory, Current [Table Text Block] Total operating lease liabilities us-gaap_OperatingLeaseLiability Current portion, operating lease liabilities Current portion of operating lease liabilities Operating lease right-of-use assets Operating lease right-of-use assets us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total lease payments us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less imputed interest us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive Thereafter 2025 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear 2023 (remainder of the year) 2026 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour 2027 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive Thereafter us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo 2025 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree 2026 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour 2027 2023 (remainder of the year) us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive 2028 2024 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo Valuation Approach and Technique [Axis] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Valuation Approach and Technique [Domain] us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths 2024 us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Other long-term assets us-gaap_ShareBasedCompensation Stock-based compensation expense Series E Preferred Stock in Biostage [Member] Represents Series E Preferred Stock in Biostage. 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(“HART”) [Member] Represents Harvard Apparatus Regenerative Technology, Inc. (“HART”). 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