Consolidated Balance Sheets - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 23,264,000	$ 100,447,000
Accounts receivable:
Oil, natural gas, and natural gas liquids revenues	13,529,000	14,016,000
Joint interest billings and other	4,924,000	9,417,000
Current derivative assets	3,694,000	3,569,000
Prepaid expenses and other current assets	498,000	1,578,000
Total current assets	45,909,000	129,027,000
Oil and gas properties, successful efforts method:
Proved properties	283,644,000	317,006,000
Unproved properties	34,609,000	76,791,000
Total oil and gas properties	318,253,000	393,797,000
Accumulated depreciation, depletion, and amortization	(119,920,000)	(97,920,000)
Net oil and gas properties	198,333,000	295,877,000
Other noncurrent assets:
Goodwill	17,532,000	22,992,000
Office and other equipment, less accumulated depreciation of $1,028 in 2015 and $474 in 2014	1,934,000	2,109,000
Land		101,000
Other noncurrent assets	1,236,000	1,282,000
TOTAL ASSETS	264,944,000	451,388,000
Current liabilities:
Accounts payable	11,580,000	28,753,000
Accrued expenses	12,975,000	20,529,000
Revenues and royalties payable	8,576,000	17,364,000
Advances	15,447,000	21,398,000
Asset retirement obligations	0	408,000
Total current liabilities	48,578,000	88,452,000
Noncurrent liabilities:
Long-term debt	11,191,000	11,191,000
Asset retirement obligations	5,075,000	5,670,000
Deferred tax liability		29,258,000
Other noncurrent liabilities	227,000	289,000
Total noncurrent liabilities	16,493,000	46,408,000
Total liabilities	$ 65,071,000	$ 134,860,000
Commitments and Contingencies (Note 12)
Equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; none issued or outstanding
Common stock, $0.001 par value, 100,000,000 shares authorized; 13,835,128 shares issued and outstanding in 2015 and 2014	$ 14,000	$ 14,000
Additional paid-in capital	358,086,000	358,086,000
Accumulated deficit	(157,767,000)	(41,112,000)
Treasury stock, 15,357 shares in 2015 and 2014	(460,000)	(460,000)
Total equity	199,873,000	316,528,000
TOTAL LIABILITIES AND EQUITY	$ 264,944,000	$ 451,388,000