SEGMENT INFORMATION (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net sales	$ 620,619	$ 571,614	$ 1,839,173	$ 1,722,892
Operating income (expense)	97,669	84,573	277,318	212,368
Identifiable assets	4,083,301		4,083,301		$ 4,021,334
Aerospace & Industrial [Member]
Segment Reporting Information [Line Items]
Net sales	197,060	189,021	578,452	593,654
Operating income (expense)	30,872	23,880	81,874	65,635
Identifiable assets	1,013,184		1,013,184		1,020,294
Defense Electronics [Member]
Segment Reporting Information [Line Items]
Net sales	182,314	148,674	528,080	428,912
Operating income (expense)	40,762	35,103	106,656	83,902
Identifiable assets	1,560,252		1,560,252		1,542,686
Naval & Power [Member]
Segment Reporting Information [Line Items]
Net sales	242,891	234,613	737,967	702,662
Operating income (expense)	35,483	33,367	116,635	90,623
Identifiable assets	1,281,365		1,281,365		1,255,325
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	(9,448)	(7,777)	(27,847)	(27,792)
Identifiable assets	208,285		208,285		175,445
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(1,646)	$ (694)	(5,326)	$ (2,336)
Operating Segments | Assets Held for Sale
Segment Reporting Information [Line Items]
Identifiable assets	$ 20,215		$ 20,215		$ 27,584