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Note 7 - Acquired Intangible Assets, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amortization of Intangible Assets, Total			$ 7,800	$ 7,400
Impairment of Intangible Assets, Finite-lived			0	600	$ 2,439
In Process Research and Development [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			0
Impairment of Intangible Assets, Finite-lived			(0)	600
Developed Technology Rights [Member]
Impairment of Intangible Assets, Finite-lived			$ (0)	$ (0)
Selling, General and Administrative Expenses [Member] | Developed Technology Rights [Member]
Impairment of Intangible Assets, Finite-lived					$ 1,000
Acquisitions of Parcus Medical and Arthrosurface [Member] | Research and Development Expense [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 600
Parcus Medical and Arthrosurface [Member] | Research and Development Expense [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 1,400

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
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-Name Accounting Standards Codification
-Topic 350
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-Section 45
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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

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-Topic 230
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