Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 177,669	$ 184,405
Accounts receivable	25,638	27,476
Assets held for sale	184	21,971
Other current assets	5,289	35,532
Total current assets	208,780	269,384
Oil and natural gas properties, successful efforts method:
Unproved properties	578,212	720,159
Proved oil and gas properties, net	407,129	265,838
Other property and equipment, net	6,933	7,971
Total property and equipment, net	992,274	993,968
OTHER NONCURRENT ASSETS
Other assets	1,937	2,520
Deferred taxes		540
TOTAL ASSETS	1,202,991	1,266,412
CURRENT LIABILITIES
Accounts payable	38,741	34,717
Accrued capital expenditures	20,324	10,956
Accrued liabilities	21,229	25,462
Accrued interest payable	9,690	23,809
Liabilities held for sale		18,898
Total current liabilities	89,984	113,842
NONCURRENT LIABILITIES
Debt, net of unamortized discount and debt issuance costs	491,593	527,248
Asset retirement obligations	4,599	3,401
Other liabilities	7,480	1,367
Total liabilities	593,656	645,858
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred stock, 50,000,000 authorized, no shares issued and outstanding
Common stock, $0.01 par value, 1,000,000,000 authorized, 260,591,893 and 222,674,270 shares issued and outstanding, respectively	2,607	2,227
Additional paid in capital	1,958,043	1,829,082
Treasury stock, shares at cost; 72,704 at September 30, 2016	(61)
Accumulated deficit	(1,351,254)	(1,210,755)
Total stockholders' equity	609,335	620,554
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,202,991	$ 1,266,412