Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (17,593,000)	$ (1,862,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, depletion, and amortization	11,103,000	14,598,000
Unrealized loss on derivative contracts	6,260,000	3,081,000
Rig idle and termination expense	5,059,000
Accretion of asset retirement obligations	261,000	282,000
Stock-based compensation	561,000
Deferred income taxes		(871,000)
Amortization of deferred financing costs	142,000	130,000
Settlement of asset retirement obligations		(46,000)
Gain on sale of assets		(1,680,000)
Changes in assets and liabilities:
Decrease in accounts receivable	4,414,000	4,397,000
(Increase) decrease in prepaid expenses and other	(132,000)	427,000
Decrease in accounts payable and accrued expenses	(6,634,000)	(18,356,000)
Decrease in revenue and royalties payable	(780,000)	(2,895,000)
Decrease in advances	(14,792,000)	(7,566,000)
Net cash used in operating activities	(12,131,000)	(10,361,000)
Cash flows from investing activities:
Lynden Arrangement, net of cash acquired	(31,334,000)
Acquisitions of oil and gas property		(5,430,000)
Additions to oil and gas property and equipment	(6,749,000)	(42,888,000)
Additions to other property and equipment	(44,000)	(279,000)
Proceeds from sales of oil and gas properties		3,506,000
Net cash used in investing activities	(38,127,000)	(45,091,000)
Cash flows from financing activities:
Proceeds from borrowings	36,597,000
Repayment of borrowings	(37,788,000)
Issuance of common stock, net of offering costs of $2.7 million	47,125,000
Deferred financing costs	(70,000)	(125,000)
Net cash provided by (used in) financing activities	45,864,000	(125,000)
Net decrease in cash and cash equivalents	(4,394,000)	(55,577,000)
Cash and cash equivalents at beginning of period	23,264,000	100,447,000
Cash and cash equivalents at end of period	18,870,000	44,870,000
Cash paid for:
Interest	416,000	175,000
Non-cash investing and financing activities:
Common stock issued for Lynden Arrangement	45,698,000
Asset retirement obligations	$ 94,000	$ 91,000