Note 6 - Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Raw materials	$ 61,481	$ 40,846
Work in progress	31,010	25,916
Finished goods	35,688	33,371
Inventories	$ 128,179	$ 100,133

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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