Note 13 - Restructuring Activities - Charges and Net Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 25,133	$ 27,081
Net loss	(1,943)	(1,538)
Total assets	48,797	50,388
Total liabilities	6,842	6,674
CHINA
Revenues	0	2
Net loss	(53)	(50)
Total assets	788	846
Total liabilities	84	67
Total net assets	$ 704	$ 779