Note 8 - Property, Plant & Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, plant and equipment, gross	$ 349,883	$ 376,001
Less accumulated depreciation and amortization	(169,898)	(167,772)
Property, plant and equipment, net before construction in progress and land	179,985	208,229
Property, plant and equipment, net	211,586	243,035
Land Improvements [Member]
Property, plant and equipment, gross	806	806
Building and Building Improvements [Member]
Property, plant and equipment, gross	85,078	89,698
Machinery and Equipment [Member]
Property, plant and equipment, gross	246,605	266,386
Furniture and Fixtures [Member]
Property, plant and equipment, gross	5,303	5,658
Computer Equipment and Software [Member]
Property, plant and equipment, gross	11,430	12,727
Vehicles [Member]
Property, plant and equipment, gross	661	726
Construction in Progress [Member]
Property, plant and equipment, net	30,500	33,705
Land [Member]
Property, plant and equipment, net	$ 1,101	$ 1,101

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale, excluding construction in progress and land.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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