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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2012
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events On October 26, 2012 we acquired Heartland Pump Rental & Sales, Inc. ("Heartland"), a dewatering pump sale and rental company, for approximately $29 million. Heartland generated revenue of approximately $33 million for the fiscal year ended December 31, 2011 and employs about 100 people at four sites within the Midwest region of the United States.