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Note 7 - Related Party Transactions (Details Textual) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
The Multi Channel Systems Facility and Triangle BioSystems Lease Agreements [Member] |  |
Operating Lease, Expense | $ 0.3 | $ 0.3

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_LeaseContractualTermAxis=hbio_TheMultiChannelSystemsFacilityAndTriangleBiosystemsLeaseAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |