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Note 8 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Intangible assets accumulated amortization	$ 23,646	$ 22,228
Intangible assets, gross	55,327	55,327
Intangible assets, net	31,681	33,099
Trade Names [Member]
Intangible assets not subject to amortization	14,287	14,287
Intangible assets not subject to amortization, net	14,287	14,287
Database Rights [Member]
Intangible assets subject to amortization	4,918	4,918
Intangible assets accumulated amortization	4,918	4,918
Intangible assets subject to amortization, net	0	0
Service Agreements [Member]
Intangible assets subject to amortization	3,680	3,680
Intangible assets accumulated amortization	3,680	3,680
Intangible assets subject to amortization, net	0	0
Customer Relationships [Member]
Intangible assets subject to amortization	32,442	32,442
Intangible assets accumulated amortization	15,048	13,630
Intangible assets subject to amortization, net	$ 17,394	$ 18,812

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(16))
-Publisher FASB
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 928
-SubTopic 340
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