CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net income (loss)	$ 20,885	$ (87,817)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of non oil and gas assets	(102)	0
Net (gain) loss on derivative contracts	(15,831)	12,775
Derivative contract settlements	2,000	4,242
Monetization of derivative contracts	0	14,370
Depreciation, depletion, and amortization	9,789	11,561
Proved property impairment	0	63,820
Amortization of deferred financing fees	254	612
Accretion of future site restoration	224	270
Stock-based compensation	1,749	1,643
Non-cash director compensation	0	40
Changes in operating assets and liabilities:
Accounts receivable	1,895	2,325
Other assets	(1,041)	1,870
Accounts payable and accrued expenses	8,576	(13,187)
Net cash provided by operating activities	28,398	12,524
Investing Activities
Capital expenditures, including purchases and development of properties	(40,453)	(5,666)
Proceeds from the sale of oil and gas properties	10,653	4,512
Proceeds from the sale of non oil and gas assets	204	0
Net cash used in by investing activities	(29,596)	(1,154)
Financing Activities
Proceeds from long-term borrowings	20,000	6,000
Payments on long-term borrowings	(82,659)	(46,155)
Proceeds from issuance of common stock	65,223	27,177
Deferred financing fees	(714)	(92)
Net cash (used in) provided by financing activities	1,850	(13,070)
Increase (decrease) in cash and cash equivalents	652	(1,700)
Cash and cash equivalents at beginning of period	0	3,540
Cash and cash equivalents at end of period	652	1,840
Supplemental disclosure of cash flow information:
Interest Paid	$ 802	$ 2,172