Note 3 - Supplemental Balance Sheet Information - Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 1,708	$ 4,166
Accumulated impairment losses	0	(2,458)
Change in goodwill due to impact of foreign currency	7
Sale of business	(333)
Balance	1,382	1,708
UNITED STATES
Balance	1,270	3,728
Accumulated impairment losses		(2,458)
Change in goodwill due to impact of foreign currency	7
Sale of business	(333)
Balance	944	1,270
Asia Pacific [Member]
Balance	0	0
Accumulated impairment losses	0	0
Change in goodwill due to impact of foreign currency	0
Balance	0	0
EMEA [Member]
Balance	438	438
Accumulated impairment losses	0	0
Balance	$ 438	$ 438