Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 227,869	$ 67,517
Accounts receivable	23,607	46,378
Assets held for sale	3,162	20,673
Other current assets	26,710	19,711
Total current assets	281,348	154,279
Oil and natural gas properties, successful efforts method
Unproved properties	934,844	1,044,469
Proved properties, net	879,850	670,255
Other property and equipment, net	8,381	8,103
Total property and equipment, net	1,823,075	1,722,827
OTHER NONCURRENT ASSETS
Debt issuance costs, net of $1.0 million and $2.5 million of amortization, respectively	13,294	6,058
Other assets	1,462	1,782
TOTAL ASSETS	2,119,179	1,884,946
CURRENT LIABILITIES
Accounts payable	57,208	137,415
Accrued capital expenditures	13,830	51,360
Accrued liabilities	24,484	13,576
Accrued interest payable	11,542	25,187
Deferred income taxes	6,404	5,246
Total current liabilities	113,468	232,784
NONCURRENT LIABILITIES
Debt, net of unamortized discount of $11.2 million and $8.5 million, respectively	538,802	414,016
Pension obligations		1,321
Asset retirement obligations	19,092	17,400
Other liabilities	1,610
Deferred income taxes	13,109	66,714
Total liabilities	$ 686,081	$ 732,235
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred stock, 50,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.01 par value, 1,000,000,000 shares authorized, 222,674,270 and 160,031,115 shares issued and outstanding, respectively	$ 2,227	$ 1,600
Additional paid in capital	1,827,896	1,391,004
Accumulated deficit	(396,886)	(239,345)
Accumulated other comprehensive loss	(139)	(548)
Total stockholders' equity	1,433,098	1,152,711
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 2,119,179	$ 1,884,946