Note 4 - BALANCE SHEET COMPONENTS - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Amortization Period (Year)	6 years 7 months 6 days
Gross Carrying Amount	$ 47,288	$ 47,288
Accumulated Amortization	(26,916)	(26,049)
Net Carrying Amount	20,372
Net Carrying Amount, Total	20,372	21,239
Customer Relationships [Member]
Gross Carrying Amount	9,407	9,407
Accumulated Amortization	(6,202)	(6,041)
Net Carrying Amount	$ 3,205	3,366
Customer Relationships [Member] \| Minimum [Member]
Amortization Period (Year)	1 year
Customer Relationships [Member] \| Maximum [Member]
Amortization Period (Year)	10 years
Developed Technology Rights [Member]
Gross Carrying Amount	$ 33,635	33,635
Accumulated Amortization	(17,848)	(17,250)
Net Carrying Amount	$ 15,787	16,385
Developed Technology Rights [Member] \| Minimum [Member]
Amortization Period (Year)	4 years
Developed Technology Rights [Member] \| Maximum [Member]
Amortization Period (Year)	9 years
Trademarks and Trade Names [Member]
Gross Carrying Amount	$ 1,598	1,598
Accumulated Amortization	(839)	(812)
Net Carrying Amount	$ 759	786
Trademarks and Trade Names [Member] \| Minimum [Member]
Amortization Period (Year)	2 years
Trademarks and Trade Names [Member] \| Maximum [Member]
Amortization Period (Year)	10 years
Patents [Member]
Gross Carrying Amount	$ 1,800	1,800
Accumulated Amortization	(1,650)	(1,640)
Net Carrying Amount	$ 150	160
Patents [Member] \| Minimum [Member]
Amortization Period (Year)	7 years
Patents [Member] \| Maximum [Member]
Amortization Period (Year)	10 years
Noncompete Agreements [Member]
Amortization Period (Year)	3 years
Gross Carrying Amount	$ 848	848
Accumulated Amortization	(377)	(306)
Net Carrying Amount	$ 471	$ 542

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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