Acquisitions (Tables)

12 Months Ended

Dec. 31, 2014

Acquisitions [Abstract]

Schedule Of Values At Date Of Acquisition

	Closing Date		Total Cash Paid  (net of cash acquired)
Mayo Marrs Casing Pulling, Inc.	January 13, 2012	$	6,644
SPA Victoria, LP	March 16, 2012		11,948
Surface Stac, Inc.	May 15, 2012		23,184
Salt Water Disposal of North Dakota LLC	December 19, 2012		43,190
Total 2012		$	84,966
Atlas Environmental Consulting, Inc. and Atlas Oilfield Construction Company, LLC	February 19, 2013	$	12,979
Petroleum Water Solutions, LLC	February 22, 2013		3,288
Karnes Water Management, LLC	December 31, 2013		5,200
Total 2013		$	21,467
Pioneer Fishing and Rental, Inc.	September 17, 2014	$	16,090
Total 2014		$	16,090