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, 2022	Dec. 31, 2021
Property and equipment, gross	$ 160,213	$ 154,020
Less accumulated depreciation and amortization	(114,894)	(110,365)
Total property and equipment	45,319	43,655
Land [Member]
Property and equipment, gross	1,423	1,423
Building [Member]
Property and equipment, gross	$ 20,792	20,778
Life (Year)	39 years
Machinery and Equipment [Member]
Property and equipment, gross	$ 120,893	116,725
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	$ 5,705	5,480
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	$ 9,040	8,937
Construction in Progress [Member]
Property and equipment, gross	$ 2,360	$ 677

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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