Note 8 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, plant and equipment, gross	$ 481,107	$ 414,237
Less accumulated depreciation	(223,897)	(204,500)
Property, plant and equipment, net before construction in progress and land	257,210	209,737
Property, plant and equipment, net	269,386	219,235
Land Improvements [Member]
Property, plant and equipment, gross	806	806
Building and Building Improvements [Member]
Property, plant and equipment, gross	128,771	118,648
Machinery and Equipment [Member]
Property, plant and equipment, gross	328,952	275,617
Furniture and Fixtures [Member]
Property, plant and equipment, gross	6,015	5,150
Computer Equipment and Software [Member]
Property, plant and equipment, gross	15,880	13,369
Vehicles [Member]
Property, plant and equipment, gross	683	647
Construction in Progress [Member]
Property, plant and equipment, net	11,075	8,397
Land [Member]
Property, plant and equipment, net	$ 1,101	$ 1,101