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Note 4 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, plant and equipment, gross	$ 92,660	$ 91,423
Less – Accumulated depreciation	(70,944)	(68,218)
Total	21,716	23,205
Land [Member]
Property, plant and equipment, gross	1,759	1,273
Building and Building Improvements [Member]
Property, plant and equipment, gross	15,572	15,442
Machinery and Equipment [Member]
Property, plant and equipment, gross	63,495	63,780
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,845	2,588
Computer Equipment [Member]
Property, plant and equipment, gross	7,744	7,579
Construction in Progress [Member]
Property, plant and equipment, gross	$ 1,245	$ 761

X

- Definition

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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