Note 5 - Acquired Intangible Assets and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Gross Carrying Amount	$ 69,292	$ 69,292
Accumulated Amortization	40,652	38,172
Patents [Member]
Gross Carrying Amount	24,715	24,715
Accumulated Amortization	24,410	24,270
Noncompete Agreements [Member]
Gross Carrying Amount	2,749	2,749
Accumulated Amortization	2,749	2,749
Customer Lists [Member]
Gross Carrying Amount	22,017	22,017
Accumulated Amortization	11,466	9,783
Trademarks [Member]
Gross Carrying Amount	18,636	18,636
Accumulated Amortization	1,339	802
Developed Technology Rights [Member]
Gross Carrying Amount	475	475
Accumulated Amortization	475	396
Licensing Agreements [Member]
Gross Carrying Amount	700	700
Accumulated Amortization	$ 213	$ 172