UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (10,602)	$ (23,703)
Loss from discontinued operations	2,327	784
Loss from continuing operations	(8,275)	(22,919)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	818	2,910
Impairment of oil and gas properties	6,957	19,240
Change in fair value of oil price risk derivative	573	63
Amortization of debt issuance costs	114	12
Stock-based compensation	34	$ 115
Unrealized gain on marketable equity securities	$ (9)
Gain on sale of assets		$ (16)
Decrease (increase) in:
Oil and gas sales receivable	$ 517	1,773
Other assets	(298)	54
Increase (decrease) in:
Accounts payable and other liabilities	(465)	1,304
Accrued compensation and benefits	(1,072)	23
Net cash provided by (used in) operating activities	(1,106)	2,574
Cash flows from investing activities:
Capital expenditures	$ (1)	(1,847)
Proceeds from sale of property and equipment		16
Net change in restricted investments		(24)
Net cash used in investing activities:	$ (1)	$ (1,855)
Cash flows from financing activities:
Proceeds from issuance of preferred stock	1
Discontinued operations:
Net cash used in operating activities for discontinued operations	(327)	$ (753)
Net increase (decrease) in cash and equivalents	(1,433)	(34)
Cash and equivalents, beginning of year	3,354	4,010
Cash and equivalents, end of year	$ 1,921	$ 3,976
Supplemental disclosures of cash flow information:
Income tax paid
Interest paid	$ 61	$ 63
Non-cash investing and financing activities:
Issuance of preferred stock in disposition of mining segment	$ 2,000
Increase (decrease) in accrued capital expenditures		$ 128
Net additions to oil and gas properties through asset retirement obligations		$ 33