INVENTORIES (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Inventory, Net [Abstract]
Inventory, Raw Materials, Net of Reserves	$ 194,887	$ 177,828
Inventory, Work in Process, Net of Reserves	81,781	80,729
Inventory, Finished Goods, Net of Reserves	111,914	120,767
Inventory For Long-term Contracts Or Programs, Net Of Reserves	50,086	56,599
Inventories, Net of Reserves	438,668	435,923
Progress Payments Netted Against Inventory for Long-term Contracts or Programs	(5,528)	(7,044)
Inventory, Net, Total	$ 433,140	$ 428,879