Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory [Line Items]
Inventory, Gross	$ 115,348	$ 174,262
Less: net realizable value adjustments	(13,386)	(1,777)
Inventory, Net	$ 101,962	$ 172,485

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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- Definition

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.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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

+ References

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