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Note 4 - Acquisition (Details Textual) - Data Sciences International, Inc. (DSI) [Member] - USD ($) $ in Millions		12 Months Ended
	Jan. 31, 2018	Dec. 31, 2018
Business Combination, Consideration Transferred, Total	$ 71.1
Business Combination Purchase Accounting Inventory Fair Value Step Up Amortization		$ 3.8
Business Combination, Purchase Accounting Inventory Fair Value Step Up, Recognized Period		180 days
Business Combination Proforma Information Amortization Of Intangible Assets		$ 2.9
Business Combination, Acquisition Related Costs		$ 3.4

X

- Definition

This element represents the amount of intangible asset amortization expense of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of purchase accounting inventory fair value step up amortization recognized in cost of revenues since the date of acquisition.

+ References

No definition available.

+ Details

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

X

- Definition

Represents recognized period for purchase accounting inventory fair value step up for business acquisition.

+ References

No definition available.

+ Details

Name:	hbio_BusinessCombinationPurchaseAccountingInventoryFairValueStepUpRecognizedPeriod
Namespace Prefix:	hbio_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hbio_DataSciencesInternationalIncDsiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: