Note 3 - Supplemental Balance Sheet Information (in Thousands) - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property and equipment	$ 25,078	$ 23,234
Less accumulated depreciation and amortization	(21,817)	(20,305)
Property and equipment, net	3,261	2,929
Equipment [Member]
Property and equipment	5,109	4,741
Furniture and Fixtures [Member]
Property and equipment	2,319	2,319
Leaseholds and Leasehold Improvements [Member]
Property and equipment	352	351
Software Development [Member]
Property and equipment	$ 17,298	$ 15,823

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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