Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (231,379)	$ 28,160
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Deferred tax expense (benefit)	1,079	(389)
Depreciation, depletion and amortization	52,686	64,424
Ceiling test writedown	214,618	0
Accretion of asset retirement obligation	2,507	2,223
Share-based compensation expense	4,022	4,025
Amortization costs and other	1,679	1,636
Payments to settle asset retirement obligations	(1,826)	(2,902)
Gain on sale of oil and gas properties	(22,359)	0
Changes in working capital accounts:
Revenue receivable	7,818	2,353
Joint interest billing receivable	20,147	1,279
Accounts payable and accrued liabilities	(36,630)	6,561
Advances from co-owners	12,031	15,881
Other	(414)	2,610
Net cash provided by operating activities	23,979	125,861
Cash flows provided by (used in) investing activities:
Investment in oil and gas properties	(75,818)	(133,048)
Investment in other property and equipment	(430)	(860)
Sale of oil and gas properties	271,891	10,204
Net cash provided by (used in) investing activities	195,643	(123,704)
Cash flows used in financing activities:
Net payments for share based compensation	422	651
Deferred financing costs	(861)	(204)
Payment of preferred stock dividend	(3,854)	(3,854)
Proceeds from bank borrowings	70,000	10,000
Repayment of bank borrowings	(145,000)	(12,500)
Net cash used in financing activities	(79,293)	(5,907)
Net increase (decrease) in cash and cash equivalents	140,329	(3,750)
Cash and cash equivalents, beginning of period	18,243	9,153
Cash and cash equivalents, end of period	158,572	5,403
Cash paid (received) during the period for:
Interest	36,137	36,606
Income taxes (refunds)	$ (26)	$ 132