INVENTORIES (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventory, Net [Abstract]
Inventory, Raw Materials, Net of Reserves	$ 193,066	$ 177,828
Inventory, Work in Process, Net of Reserves	85,377	80,729
Inventory, Finished Goods, Net of Reserves	120,702	120,767
Inventory For Long-term Contracts Or Programs, Net Of Reserves	53,603	56,599
Inventories, Net of Reserves	452,748	435,923
Less: Progress payments applied	(6,059)	(7,044)
Inventories, net	$ 446,689	$ 428,879

Inventories, Net of Reserves

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- Definition

Inventory For Long-term Contracts Or Programs, Net Of Reserves

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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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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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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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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