SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales		$ 523,591	$ 503,507
Operating income (expense)		51,227	57,263
Identifiable assets		3,017,873		$ 3,037,781
Commercial Industrial [Member]
Segment Reporting Information [Line Items]
Net sales		279,056	275,205
Operating income (expense)		30,621	30,052
Identifiable assets		1,417,174		1,391,040
Defense [Member]
Segment Reporting Information [Line Items]
Net sales		114,837	105,730
Operating income (expense)		11,155	16,845
Identifiable assets		989,842		751,859
Power [Member]
Segment Reporting Information [Line Items]
Net sales		130,595	123,746
Operating income (expense)		16,540	14,628
Identifiable assets		507,024		516,321
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Identifiable assets		103,833		$ 378,561
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	[1]	(7,089)	(4,262)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		$ (897)	$ (1,174)

[1] Corporate and eliminations includes pension and other postretirement benefit expense, certain environmental costs related to remediation at legacy sites, foreign currency transactional gains and losses, and certain other expenses.