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Note 3 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets, Gross $ 64,672 $ 64,892
Total amortizable intangible assets (39,028) (37,745)
Finite-Lived Intangible Assets, Net 25,644 27,147
Indefinite-lived intangible assets: 234 238
Total intangible assets, Net $ 25,878 27,385
Distribution Agreements/Customer Relationships [Member]    
Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) [1] 7 years 8 months 12 days  
Finite-Lived Intangible Assets, Gross $ 17,594 17,689
Total amortizable intangible assets (8,938) (8,675)
Finite-Lived Intangible Assets, Net $ 8,656 9,014
Existing Technology [Member]    
Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) [1] 3 years 10 months 24 days  
Finite-Lived Intangible Assets, Gross $ 38,611 38,707
Total amortizable intangible assets (24,786) (23,962)
Finite-Lived Intangible Assets, Net $ 13,825 14,745
Trade Names and Patents [Member]    
Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) [1] 4 years 2 months 12 days  
Finite-Lived Intangible Assets, Gross $ 8,467 8,496
Total amortizable intangible assets (5,304) (5,108)
Finite-Lived Intangible Assets, Net $ 3,163 $ 3,388
[1] Weighted average life in years as of December 31, 2021