Note 7 - Selected Balance Sheet Accounts - Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets, gross	$ 25,544
Finite-Lived Intangible Assets, Accumulated Amortization	(24,804)	$ (24,510)
Finite-Lived Intangible Assets, Net	740	1,034
Trademarks Trade Names Licenses and Domains [Member]
Finite-Lived Intangible Assets, gross	16,589
Finite-Lived Intangible Assets, Accumulated Amortization	(16,393)	(16,372)
Finite-Lived Intangible Assets, Net	$ 196	217
Trademarks Trade Names Licenses and Domains [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	3 years
Trademarks Trade Names Licenses and Domains [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Finite-Lived Intangible Assets, gross	$ 16,589
Developed Technology Rights [Member]
Finite-Lived Intangible Assets, gross	8,955
Finite-Lived Intangible Assets, Accumulated Amortization	(8,411)	(8,138)
Finite-Lived Intangible Assets, Net	$ 544	$ 817
Developed Technology Rights [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Developed Technology Rights [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Finite-Lived Intangible Assets, gross	$ 8,955