Note 4 - Goodwill and Long-Lived Assets - Schedule of Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Cost of revenues	$ 907	$ 1,204
Cost of Revenues [Member]
Cost of revenues	87	44
Operating Expenses [Member]
Cost of revenues	$ 820	$ 1,160

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets including portion attributable to discontinued operations, not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

No definition available.

Name:	hbio_AmortizationOfIntangibleAssetsIncludingAmountsRelatedToDiscontinuedOperation
Namespace Prefix:	hbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration