Note 7 - Impairment Losses & Restructuring Exit Cost - Restructuring and Related Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 465	$ 25
Accruals	662	1,942
Payments	(1,088)	(1,502)
Ending balance	39	465
Employee Severance [Member]
Balance	310	0
Accruals	551	1,749
Payments	(822)	(1,439)
Ending balance	39	310
Facility Closing [Member]
Balance	155	25
Accruals	111	193
Payments	(266)	(63)
Ending balance	$ 0	$ 155