SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net sales	$ 597,059	$ 601,231
Operating income (expense)	85,066	72,446
Identifiable assets	3,981,050		$ 4,021,334
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(1,957)	(1,115)
Operating Segments | Aerospace & Industrial
Segment Reporting Information [Line Items]
Net sales	181,138	227,021
Operating income (expense)	19,025	32,140
Identifiable assets	1,017,236		1,020,294
Operating Segments | Defense Electronics
Segment Reporting Information [Line Items]
Net sales	182,298	140,311
Operating income (expense)	36,623	24,063
Identifiable assets	1,544,100		1,542,686
Operating Segments | Naval & Power
Segment Reporting Information [Line Items]
Net sales	235,580	235,014
Operating income (expense)	38,057	28,110
Identifiable assets	1,256,745		1,255,325
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
Operating income (expense)	(8,639)	$ (11,867)
Identifiable assets	135,914		175,445
Operating Segments | Assets Held For Sale
Segment Reporting Information [Line Items]
Identifiable assets	$ 27,055		$ 27,584