Acquisition (Details) (USD $)	1 Months Ended
	Jun. 30, 2014 sqmi acre	Mar. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Accrued acquisition costs		$ 8,238,000	$ 17,690,000
LOUISIANA | Fleetwood Joint Venture
Business Acquisition [Line Items]
Purchase price	24,000,000
Average working interest in leasehold position	37.00%
Acres acquired in leasehold position	30,000
Exclusive rights, square miles of proprietary 3D survey	200
Cash portion of purchase price	10,000,000
Cash funding for future drilling	$ 14,000,000