Note 7 - Leases (Details Textual) $ in Thousands	Jun. 30, 2021 USD ($) ft²	Dec. 31, 2020
Finance Lease, Right-of-Use Asset \| $	$ 0
Lessee, Operating Lease, Discount Rate		5.25%
Senior Secured Credit Facility [Member] \| Term Loan [Member]
Debt Instrument, Interest Rate, Stated Percentage	3.50%
North Brunswick, New Jersey [Member] \| Artegraft Inc [Member]
Area of Real Estate Property (Square Foot)	16,732
CANADA
Lessee, Operating Lease, Renewal Term (Year)	5 years
Principal Worldwide Executive, Distribution, and Manufacturing Operations Facilities [Member] \| Massachusetts [Member]
Area of Real Estate Property (Square Foot)	109,354
International Operations Headquarter Facility [Member] \| GERMANY
Area of Real Estate Property (Square Foot)	16,470
Lessee, Operating Lease, Renewal Term (Year)	5 years
Customer Service and Warehouse Facility [Member] \| ITALY
Lessee, Operating Lease, Renewal Term (Year)	6 years
Lessee, Operating Lease, Term of Contract (Year)	6 years
Leased Automobiles [Member]
Lessee, Operating Lease, Term of Contract (Year)	3 years
Leased Printing Equipment [Member]
Lessee, Operating Lease, Term of Contract (Year)	5 years

Area of a real estate property.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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- Definition

Discount rate used by lessee to determine present value of operating lease payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)(3)
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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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