SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 532,766	$ 545,194	$ 1,036,273	$ 1,091,393
Operating income (expense)	68,089	65,442	125,352	138,277
Identifiable assets	2,979,180		2,979,180		$ 2,989,611
Commercial Industrial [Member]
Segment Reporting Information [Line Items]
Net sales	290,428	305,074	565,633	604,972
Operating income (expense)	38,957	45,253	69,009	88,542
Identifiable assets	1,469,641		1,469,641		1,480,052
Defense [Member]
Segment Reporting Information [Line Items]
Net sales	114,877	120,149	220,607	234,501
Operating income (expense)	18,609	24,391	35,454	42,418
Identifiable assets	805,307		805,307		800,613
Power [Member]
Segment Reporting Information [Line Items]
Net sales	129,123	121,661	252,869	256,796
Operating income (expense)	16,114	1,454	30,742	20,966
Identifiable assets	535,348		535,348		629,612
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	(5,591)	(5,656)	(9,853)	(13,649)
Identifiable assets	168,884		168,884		$ 79,334
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	$ (1,662)	$ (1,690)	$ (2,836)	$ (4,876)