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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

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