Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Total Cash Paid (net of cash acquired)	$ 16,090	$ 21,467
Atlas Environmental Consulting, Inc. and Atlas Oilfield Construction Company, LLC
Business Acquisition [Line Items]
Closing Date		Feb. 19, 2013
Total Cash Paid (net of cash acquired)		12,979
Petroleum Water Solutions, LLC
Business Acquisition [Line Items]
Closing Date		Feb. 22, 2013
Total Cash Paid (net of cash acquired)		3,288
Karnes Water Management LLC
Business Acquisition [Line Items]
Closing Date		Dec. 31, 2013
Total Cash Paid (net of cash acquired)		5,200
Pioneer Fishing and Rental, Inc
Business Acquisition [Line Items]
Closing Date	Sep. 17, 2014
Total Cash Paid (net of cash acquired)	$ 16,090