SEGMENT INFORMATION (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 526,386		$ 505,672		$ 1,028,047		$ 958,603
Operating income	40,540		48,926		76,099		88,117
Total assets	2,682,639				2,682,639				2,652,837
Flow Control [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	274,653		266,614		541,444		505,756
Operating income	18,614		26,532		37,141		45,164
Total assets	1,223,497				1,223,497				1,257,142
Motion Control [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	183,678		176,893		351,823		337,163
Operating income	23,527		18,804		36,456		35,090
Total assets	1,019,518				1,019,518				1,034,225
Metal Treatment [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Revenue for Reportable Segment	71,067		62,826		141,156		117,168
Operating income	5,937		7,644		15,793		15,209
Total assets	254,051				254,051				286,084
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Intersegment Revenue	(3,012)		(661)		(6,376)		(1,484)
Corporate Elimination [Member]
Segment Reporting Information [Line Items]
Operating income	(7,538)	[1]	(4,054)	[1]	(13,291)	[1]	(7,346)	[1]
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 185,573				$ 185,573				$ 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.