Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Gross property and equipment	$ 32,626	$ 29,446
Less accumulated depreciation	(17,772)	(15,344)
Property and equipment, net	14,854	14,102
Computers and Equipment [Member]
Gross property and equipment	4,623	4,077
Machinery and Equipment [Member]
Gross property and equipment	16,245	13,718
Building and Leasehold Improvements [Member]
Gross property and equipment	$ 11,758	$ 11,651

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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