Note 3 - Inventories and Other Deferred Costs - Summary of Inventories and Other Deferred Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Raw materials	$ 19,137	$ 14,929
Work-in-process	3,793	3,662
Finished products	28,334	26,688
Other deferred costs	4,923	4,992
Total inventory and other deferred costs	$ 56,187	$ 50,271