SEGMENT INFORMATION (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Segment Reporting Information [Line Items]
Net sales	$ 515,996	$ 465,813	$ 1,492,751	$ 1,369,753
Operating income	50,146	48,086	143,518	122,598
Total assets	2,451,392		2,451,392		2,242,018
Flow Control [Member]
Segment Reporting Information [Line Items]
Net sales	265,249	249,255	771,005	741,842
Operating income	24,836	26,030	70,000	67,554
Total assets	1,171,222		1,171,222		1,102,417
Motion Control [Member]
Segment Reporting Information [Line Items]
Net sales	178,668	162,719	515,831	470,455
Operating income	18,896	21,730	53,986	54,026
Total assets	969,801		969,801		873,074
Metal Treatment [Member]
Segment Reporting Information [Line Items]
Net sales	74,158	54,437	209,478	163,266
Operating income	12,398	5,639	32,862	18,136
Total assets	283,980		283,980		233,356
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(2,079)	(598)	(3,563)	(5,810)
Corporate Elimination [Member]
Segment Reporting Information [Line Items]
Operating income	(5,984)	(5,313)	(13,330)	(17,118)
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 26,389		$ 26,389		$ 33,171