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Details of Selected Balance Sheet Accounts - Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Details of Selected Balance Sheet Accounts [Abstract]
Finished goods and purchased products	$ 91,215	$ 87,934
Work in process	30,706	24,722
Raw materials	98,285	96,357
Total inventories	220,206	209,013
Allowance for excess or obsolete inventory	(39,320)	(40,440)
Inventories, net	$ 180,886	$ 168,573

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Details of Selected Balance Sheet Accounts [Abstract]

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Amount before valuation and LIFO reserves of purchased products and 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 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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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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Amount of valuation reserve for inventory.

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