Note 8 - Property, Plant and Equipment, Net - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, plant and equipment, gross	$ 135,045	$ 145,224
Accumulated depreciation	(96,852)	(108,391)
Property, plant and equipment, net	38,193	36,833
Land [Member]
Property, plant and equipment, gross	1,015	1,098
Building and Building Improvements [Member]
Property, plant and equipment, gross	22,157	21,529
Machinery and Equipment [Member]
Property, plant and equipment, gross	109,524	118,358
Construction in Progress [Member]
Property, plant and equipment, gross	$ 2,349	$ 4,239