Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (6,421,000)	$ (1,114,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion, and amortization	5,505,000	5,924,000
Unrealized loss on derivative contracts	1,226,000	820,000
Accretion of asset retirement obligations	128,000	145,000
Deferred income taxes		(585,000)
Amortization of deferred financing costs	70,000	65,000
Settlement of asset retirement obligations		(46,000)
Changes in assets and liabilities:
Decrease in accounts receivable	3,258,000	7,754,000
(Increase) decrease in prepaid expenses and other	(244,000)	387,000
Decrease in accounts payable and accrued expenses	(4,576,000)	(21,690,000)
Decrease in revenue and royalties payable	(2,904,000)	(8,730,000)
Decrease in advances	(11,234,000)	(4,436,000)
Net cash used in operating activities	(15,192,000)	(21,506,000)
Cash flows from investing activities:
Additions to oil and gas property and equipment	(2,365,000)	(19,040,000)
Additions to other property and equipment	(20,000)	(138,000)
Net cash used in investing activities	(2,385,000)	(19,178,000)
Cash flows from financing activities:
Deferred financing costs	(3,000)	(73,000)
Net cash used in financing activities	(3,000)	(73,000)
Net decrease in cash and cash equivalents	(17,580,000)	(40,757,000)
Cash and cash equivalents at beginning of period	23,264,000	100,447,000
Cash and cash equivalents at end of period	5,684,000	59,690,000
Cash paid for:
Interest	142,000	52,000
Non-cash investing and financing activities:
Asset retirement obligations	$ (8,000)	$ 43,000