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Note 7 - Long-lived Assets - Cost Basis and Estimated Lives of Property and Equipment from Continuing Operations (Details) - USD ($) $ in Thousands	24 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property and equipment, gross	$ 154,020	$ 150,373
Less accumulated depreciation and amortization	(110,365)	(105,178)
Total property and equipment	43,655	45,195
Land [Member]
Property and equipment, gross	1,423	1,423
Building [Member]
Property and equipment, gross	$ 20,778	20,778
Life (Year)	39 years
Machinery and Equipment [Member]
Property and equipment, gross	$ 116,725	113,266
Machinery and Equipment [Member] | Minimum [Member]
Life (Year)	2 years
Machinery and Equipment [Member] | Maximum [Member]
Life (Year)	10 years
Office Equipment [Member]
Property and equipment, gross	$ 5,480	5,099
Office Equipment [Member] | Minimum [Member]
Life (Year)	3 years
Office Equipment [Member] | Maximum [Member]
Life (Year)	7 years
Leasehold Improvements [Member]
Property and equipment, gross	$ 8,937	9,305
Construction in Progress [Member]
Property and equipment, gross	$ 677	$ 502

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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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