Note 6 - Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property and equipment	$ 16,827	$ 14,449
Less accumulated depreciation and amortization	(8,113)	(7,336)
Property and equipment, net	8,714	7,113
Furniture and Fixtures [Member]
Property and equipment	1,122	722
Office Equipment [Member]
Property and equipment	467	211
Software Development [Member]
Property and equipment	1,159	1,159
Laboratory Equipment [Member]
Property and equipment	4,247	3,774
Leasehold Improvements [Member]
Property and equipment	$ 9,832	$ 8,583

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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