CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities
Net income (loss)	$ 13,690	$ (40,880)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Change in derivative fair value	(9,381)	(665)
Derivative contract settlements	(621)	5,307
Monetization of derivative contracts	0	4,360
Depreciation, depletion, and amortization	5,374	5,892
Proved property impairment	0	35,085
Amortization of deferred financing fees	137	164
Accretion of future site restoration	112	135
Stock-based compensation	770	807
Non-cash director compensation	0	40
Changes in operating assets and liabilities:
Accounts receivable	4,216	3,059
Other assets	515	(227)
Accounts payable and accrued expenses	(3,031)	(15,567)
Net cash provided by (used in) operating activities	11,781	(2,490)
Investing Activities
Capital expenditures, including purchases and development of properties	(10,957)	(1,587)
Proceeds from the sale of oil and gas properties	10,622	1,597
Net cash (used in) provided by investing activities	(335)	10
Financing Activities
Proceeds from long-term borrowings	6,000	4,000
Payments on long-term borrowings	(81,598)	(4,578)
Proceeds from issuance of common stock	65,223	0
Deferred financing fees	(10)	1
Net cash (used in) provided by financing activities	(10,385)	(577)
Increase (decrease) in cash and cash equivalents	1,061	(3,057)
Cash and cash equivalents at beginning of period	0	3,540
Cash and cash equivalents at end of period	1,061	483
Supplemental disclosure of cash flow information:
Interest Paid	$ 507	$ 1,110