SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 601,231	$ 578,314
Operating income (expense)	72,446	72,045
Identifiable assets	3,631,394		$ 3,764,261
Commercial Industrial
Segment Reporting Information [Line Items]
Net sales	264,500	270,160
Operating income (expense)	34,987	35,205
Identifiable assets	1,409,224		1,363,592
Defense [Member]
Segment Reporting Information [Line Items]
Net sales	166,151	133,909
Operating income (expense)	28,704	20,732
Identifiable assets	1,165,137		1,209,706
Power
Segment Reporting Information [Line Items]
Net sales	171,004	175,035
Operating income (expense)	20,622	25,381
Identifiable assets	887,345		885,727
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	(11,867)	(9,273)
Identifiable assets	169,688		$ 305,236
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	$ (424)	$ (790)