Details of Selected Balance Sheet Accounts - Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Details of Selected Balance Sheet Accounts [Abstract]
Finished goods and purchased products	$ 106,833	$ 107,691
Work in process	30,175	21,963
Raw materials	114,818	110,719
Total inventories	251,826	240,373
Allowance for excess or obsolete inventory	(42,646)	(19,031)
Inventories, net	$ 209,180	$ 221,342

Details of Selected Balance Sheet Accounts [Abstract]

No definition available.

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- Definition

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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No definition available.

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

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