Acquisitions - Schedule Of Values At Date Of Acquisition (Details) - USD ($) $ in Thousands				12 Months Ended
	Aug. 31, 2015	Jul. 24, 2015	Jul. 17, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Total Cash Paid (net of cash acquired)				$ 16,730
Harbor Resources, LLC
Business Acquisition [Line Items]
Closing Date			Jul. 17, 2015
Total Cash Paid (net of cash acquired)			$ 4,500
Aerion Rental, LLC
Business Acquisition [Line Items]
Closing Date		Jul. 24, 2015
Total Cash Paid (net of cash acquired)		$ 1,997
Grey Rock Pressure Pumping, LLC
Business Acquisition [Line Items]
Closing Date	Aug. 31, 2015
Total Cash Paid (net of cash acquired)	$ 10,233