Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (37,643)	$ (120,960)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred tax expense (benefit)	86	(927)
Depreciation, depletion and amortization	10,138	20,654
Ceiling test writedown	18,857	108,911
Accretion of asset retirement obligation	608	859
Share-based compensation expense	442	1,478
Amortization costs and other	562	591
Payments to settle asset retirement obligations	(464)	(894)
Costs incurred to issue 2021 Notes	4,740	0
Changes in working capital accounts:
Revenue receivable	(842)	2,794
Joint interest billing receivable	10,709	14,439
Accounts payable and accrued liabilities	(20,413)	(24,561)
Advances from co-owners	(12,021)	22,182
Other	(949)	(1,335)
Net cash provided by (used in) operating activities	(26,190)	23,231
Cash flows used in investing activities:
Investment in oil and gas properties	(15,812)	(36,033)
Investment in other property and equipment	(23)	(80)
Sale of oil and gas properties	7,000	0
Net cash used in investing activities	(8,835)	(36,113)
Cash flows provided by (used in) financing activities:
Net proceeds for share based compensation	65	405
Deferred financing costs	(38)	(273)
Payment of preferred stock dividend	(1,284)	(1,284)
Redemption of 2017 Notes	(53,626)	0
Costs incurred to issue 2021 Notes	(4,740)	0
Proceeds from bank borrowings	0	15,000
Repayment of bank borrowings	0	(5,000)
Net cash provided by (used in) financing activities	(59,623)	8,848
Net decrease in cash and cash equivalents	(94,648)	(4,034)
Cash and cash equivalents, beginning of period	148,013	18,243
Cash and cash equivalents, end of period	53,365	14,209
Cash paid during the period for:
Interest	16,781	17,943
Income taxes	$ 0	$ 20