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Note 1 - Summary of Significant Accounting Policies - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Raw materials $ 14,865 $ 15,245
Work in process 969 479
Finished goods 242 41
Reserves (2,159) (1,486)
Total $ 13,917 $ 14,279