Note 4 - Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Raw materials	$ 21,381	$ 24,651
Work-in-process	14,138	10,390
Finished goods	4,109	4,595
Inventory, Gross	39,628	39,636
Less: Reserve	(2,242)	(2,231)
Net inventories	$ 37,386	$ 37,405