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Note 4 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Raw materials	$ 20,529	$ 14,586
Work-in-process	11,218	12,634
Finished goods	2,710	2,704
Inventory, Gross, Total	34,457	29,924
Less: Reserve for excess and obsolete inventory	(2,506)	(3,200)
Net inventories	$ 31,951	$ 26,724

X

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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

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