INTANGIBLE ASSETS AND GOODWILL (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2012
Change in the Carrying Amount of Goodwill by Reporting Segment
Goodwill, Beginning Balance	$ 168,846,000
Acquisitions	25,000,000
Adjustments to prior year acquisitions	0
Foreign currency translation	1,500,000
Goodwill, Ending Balance	195,258,000
Water Systems
Change in the Carrying Amount of Goodwill by Reporting Segment
Goodwill, Beginning Balance	109,900,000
Acquisitions	25,000,000
Adjustments to prior year acquisitions	0
Foreign currency translation	1,400,000
Goodwill, Ending Balance	136,300,000
Fueling Systems
Change in the Carrying Amount of Goodwill by Reporting Segment
Goodwill, Beginning Balance	58,900,000
Acquisitions	0
Adjustments to prior year acquisitions	0
Foreign currency translation	100,000
Goodwill, Ending Balance	$ 59,000,000