Note 4 - Inventories - Summary of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Raw materials	$ 16,634	$ 17,252
Work in progress	5,005	5,015
Finished goods	8,561	6,078
Total	$ 30,200	$ 28,345

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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