Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 56,406	$ 44,976
Work-in-process	28,247	25,291
Finished goods	33,563	32,093
Total inventories	$ 118,216	$ 102,360

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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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