SEGMENT INFORMATION (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 479,222		$ 509,120		$ 1,507,269		$ 1,466,267
Operating income	23,366		46,107		99,465		130,683
Total assets	2,705,705				2,705,705				2,635,547
Flow Control [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	236,733		265,249		778,177		771,005
Operating income	1,194		24,836		38,335		70,000
Total assets	1,206,004				1,206,004				1,257,142
Motion Control [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	176,649		181,017		528,472		516,724
Operating income	22,790		19,078		59,246		50,627
Total assets	1,015,388				1,015,388				1,016,935
Metal Treatment [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	68,446		64,933		209,602		182,101
Operating income	8,200		8,177		23,993		23,386
Total assets	259,777				259,777				286,084
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Intersegment Revenue	(2,606)		(2,079)		(8,982)		(3,563)
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Operating income	(8,818)	[1]	(5,984)	[1]	(22,109)	[1]	(13,330)	[1]
Total assets	$ 224,536				$ 224,536				$ 75,386

[1] (1) Corporate and eliminations includes pension expense, environmental remediation and administrative expenses, legal, foreign currency transactional gains and losses, and other expenses.