INVENTORIES (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory, Net [Abstract]
Raw material	$ 214,442	$ 191,855
Work-in-process	74,536	73,937
Finished goods and component parts	143,016	114,307
Inventory costs related to U.S. Government and other long-term contracts	54,195	65,150
Gross inventories	486,189	445,249
Less: Inventory reserves	(55,776)	(54,638)
Progress payments applied, principally related to long-term contracts	(6,987)	(11,745)
Inventories, net	$ 423,426	$ 378,866

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

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Amount before valuation and LIFO reserves, and progress payments, of inventory associated with long-term contracts, expected to be sold, or consumed 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 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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Amount of advances received from customers under long-term contracts which have been offset against inventories accounts at the balance sheet date.

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