UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and equivalents	$ 2,164	$ 2,518
Oil and gas sales receivable	659	562
Discontinued operations - assets of mining segment	114	114
Assets available for sale	653	653
Marketable securities	861	947
Other current assets	254	95
Total current assets	4,705	4,889
Oil and gas properties under full cost method:
Unevaluated properties and exploratory wells in progress	4,664	4,664
Evaluated properties	87,919	87,834
Less accumulated depreciation, depletion and amortization	(82,901)	(82,640)
Net oil and gas properties	9,682	9,858
Other assets:
Property and equipment, net	1,817	1,864
Other assets	121	156
Total other assets	1,938	2,020
Total assets	16,325	16,767
Accounts payable and accrued liabilities:
Payable to Major Operator	2,923	2,710
Contingent ownership interests	1,383	1,430
Other	1,176	743
Accrued compensation and benefits	61	49
Current portion of long-term debt	6,000	6,000
Total current liabilities	11,543	10,932
Noncurrent liabilities:
Asset retirement obligations	1,053	1,045
Warrant liability	690	1,030
Other liabilities	1	2
Total noncurrent liabilities	1,744	2,077
Shareholders' equity:
Preferred stock, par value $0.01 per share. Authorized 100,000 shares, 50,000 shares of series A Convertible Preferred Stock outstanding as of March 31, 2017 and December 31, 2016; liquidation preference of $2,302 as of March 31, 2017.	1	1
Common stock, $0.01 par value; unlimited shares authorized; 6,134,506 and 4,699,956 shares issued and outstanding, respectively	61	61
Additional paid-in capital	127,681	127,576
Accumulated deficit	(124,565)	(123,825)
Other comprehensive loss	(140)	(55)
Total shareholders' equity	3,038	3,758
Total liabilities and shareholders' equity	$ 16,325	$ 16,767