Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Components of inventories
Inventories, gross	$ 75,632	$ 67,137
Reserve for obsolete and excess inventory	(8,180)	(5,270)
Inventories, net	$ 67,452	$ 61,867

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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