Note 8 - Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property and equipment, gross	$ 4,280	$ 4,193
Less: accumulated depreciation and amortization	(2,675)	(2,226)
Property and equipment, net	1,605	1,967
Laboratory Equipment [Member]
Property and equipment, gross	374	360
Computers and Software [Member]
Property and equipment, gross	2,115	2,064
Furniture [Member[
Property and equipment, gross	597	597
Leasehold Improvements [Member]
Property and equipment, gross	617	617
Manufacturing Equipment [Member]
Property and equipment, gross	$ 577	$ 555

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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