SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 507,092	$ 525,535	$ 1,543,366	$ 1,616,928
Operating income (expense)	76,573	63,813	201,925	202,090
Identifiable assets	3,013,984		3,013,984		$ 2,989,611
Commercial Industrial [Member]
Segment Reporting Information [Line Items]
Net sales	276,179	293,039	841,812	898,011
Operating income (expense)	39,067	40,259	108,076	128,801
Identifiable assets	1,451,198		1,451,198		1,480,052
Defense [Member]
Segment Reporting Information [Line Items]
Net sales	114,946	118,019	335,553	352,520
Operating income (expense)	28,822	25,477	64,276	67,895
Identifiable assets	820,384		820,384		800,613
Power [Member]
Segment Reporting Information [Line Items]
Net sales	117,929	115,898	370,798	372,694
Operating income (expense)	14,130	13,545	44,872	34,511
Identifiable assets	528,052		528,052		629,612
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	(5,446)	(15,468)	(15,299)	(29,117)
Identifiable assets	214,350		214,350		$ 79,334
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	$ (1,962)	$ (1,421)	$ (4,797)	$ (6,297)