CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and equivalents	$ 3,354	$ 4,010
Oil and gas sales receivable	1,143	$ 3,177
Oil price risk derivatives	1,634
Discontinued operations - assets of mining segment	318
Marketable equity securities	251	$ 25
Other current assets	136	288
Total current assets	6,836	7,500
Oil and gas properties under full cost method:
Unevaluated properties and exploratory wells in progress	5,664	12,545
Evaluated properties	97,912	147,486
Less accumulated depreciation, depletion and amortization	(80,144)	(71,762)
Net oil and gas properties	23,432	88,269
Other assets:
Property and equipment, net	$ 2,658	2,939
Discontinued operations - assets of mining segment		23,475
Other assets	$ 206	1,340
Total other assets	2,864	27,754
Total assets	33,132	123,523
Accounts payable and accrued liabilities:
Payable to Major Operator	4,159	$ 5,189
Contingent ownership interests	3,108
Other	1,775	$ 2,252
Accrued compensation and benefits	1,352	$ 511
Current portion of long-term debt	6,000
Discontinued operations of mining properties	204	$ 188
Other current liabilities	16	14
Total current liabilities	$ 16,614	8,154
Noncurrent liabilities:
Long-term debt, less current portion		6,000
Asset retirement obligations	$ 1,038	945
Other liabilities	5	1,029
Total noncurrent liabilities	$ 1,043	$ 7,974
Commitments and contingencies (Note 10)
Shareholders' equity:
Preferred stock, par value $0.01 per share. Authorized 100,000 shares, no shares issued
Common stock, $0.01 par value; unlimited shares authorized; 28,199,735 shares issued and outstanding	$ 282	$ 280
Additional paid-in capital	124,898	123,980
Accumulated deficit	$ (109,705)	(16,809)
Other comprehensive loss		(56)
Total shareholders' equity	$ 15,475	107,395
Total liabilities and shareholders' equity	$ 33,132	$ 123,523