Note 1 - Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property and equipment, gross	$ 18,932	$ 15,482
Less - accumulated depreciation	(4,259)	(3,794)
Property and equipment, net	14,673	11,688
Machinery and Equipment [Member]
Property and equipment, gross	6,809	5,204
Leasehold Improvements [Member]
Property and equipment, gross	3,621	3,204
Computer Equipment [Member]
Property and equipment, gross	710	691
Furniture and Fixtures [Member]
Property and equipment, gross	908	908
Construction in Progress [Member]
Property and equipment, gross	$ 6,884	$ 5,475

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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