Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net (loss) income	$ (144,000)	$ 8,484,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, depletion, and amortization	22,705,000	13,031,000
Unrealized gain on derivative contracts	(344,000)	(1,155,000)
Accretion of asset retirement obligations	425,000	229,000
Deferred income taxes	(69,000)
Amortization of deferred financing costs	195,000	113,000
Settlement of asset retirement obligations	(65,000)	(56,000)
Gain on sale of assets	(1,667,000)
Changes in assets and liabilities:
Decrease (increase) in accounts receivable	5,362,000	(18,457,000)
Decrease (increase) in prepaid expenses and other	548,000	(408,000)
(Decrease) increase in accounts payable and accrued expenses	(15,547,000)	38,532,000
(Decrease) increase in revenue and royalties payable	(7,318,000)	10,509,000
Increase in advances	224,000	11,028,000
Net cash provided by operating activities	4,305,000	61,850,000
Cash flows from investing activities:
Acquisitions of oil and gas property	(8,706,000)
Additions to oil and gas property and equipment	(57,705,000)	(54,537,000)
Additions to other property and equipment	(328,000)	(576,000)
Proceeds from sales of oil and gas properties	3,441,000
Net cash used in investing activities	(63,298,000)	(55,113,000)
Cash flows from financing activities:
Deferred financing costs	(127,000)	(188,000)
Net cash used in financing activities	(127,000)	(188,000)
Net (decrease) increase in cash and cash equivalents	(59,120,000)	6,549,000
Cash and cash equivalents at beginning of period	100,447,000	25,423,000
Cash and cash equivalents at end of period	41,327,000	31,972,000
Cash paid for:
Interest	284,000	331,000
Non-cash investing and financing activities:
Asset retirement obligations	128,000	$ 50,000
Acquisitions of oil and gas properties	$ 2,130,000