SEGMENT INFORMATION (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) segment	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment			3
Net sales	$ 525,535	$ 558,383	$ 1,616,928	$ 1,670,540
Operating income (expense)	63,813	74,249	202,090	207,442
Identifiable assets	3,014,701		3,014,701		$ 3,399,511
Commercial Industrial [Member]
Segment Reporting Information [Line Items]
Net sales	293,039	313,775	898,011	930,906
Operating income (expense)	40,259	51,069	128,801	135,315
Identifiable assets	1,526,188		1,526,188		1,534,882
Defense [Member]
Segment Reporting Information [Line Items]
Net sales	118,019	127,768	352,520	359,810
Operating income (expense)	25,477	22,480	67,895	56,266
Identifiable assets	806,111		806,111		837,891
Power [Member]
Segment Reporting Information [Line Items]
Net sales	115,898	118,837	372,694	386,432
Operating income (expense)	13,545	11,120	34,511	40,260
Identifiable assets	575,042		575,042		588,366
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(1,421)	(1,997)	(6,297)	(6,608)
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	(15,468)	$ (10,420)	(29,117)	$ (24,399)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Identifiable assets	107,158		107,158		291,025
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Segment Reporting Information [Line Items]
Identifiable assets	$ 202		$ 202		$ 147,347