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INVENTORIES (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Inventory, Net [Abstract]    
Raw material $ 191,678 $ 214,442
Work-in-process 91,848 74,536
Finished goods and component parts 143,360 143,016
Inventoried costs related to U.S. Government and other long-term contracts 70,684 54,195
Gross inventories 497,570 486,189
Less: Inventory reserves 53,808 55,776
Progress payments applied (7,572) (6,987)
Inventories, net $ 436,190 $ 423,426