Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (3,633)	$ (37,643)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Deferred tax expense	0	86
Depreciation, depletion and amortization	6,117	10,138
Ceiling test writedown	0	18,857
Accretion of asset retirement obligation	547	608
Share-based compensation expense	425	442
Amortization costs and other	238	562
Non-cash PIK Interest	5,512	0
Payments to settle asset retirement obligations	(402)	(464)
Costs incurred to issue 2021 Notes	0	4,740
Changes in working capital accounts:
Revenue receivable	1,025	(842)
Joint interest billing receivable	460	10,709
Accounts payable and accrued liabilities	3,037	(20,413)
Advances from co-owners	1,549	(12,021)
Other	(1,462)	(949)
Net cash provided by (used in) operating activities	13,413	(26,190)
Cash flows used in investing activities:
Investment in oil and gas properties	(10,898)	(15,812)
Investment in other property and equipment	(16)	(23)
Sale of oil and gas properties	0	7,000
Net cash used in investing activities	(10,914)	(8,835)
Cash flows used in financing activities:
Net proceeds from share based compensation	40	65
Deferred financing costs	(10)	(38)
Payment of preferred stock dividend	0	(1,284)
Redemption of 2017 Notes	(22,650)	(53,626)
Costs incurred to issue 2021 Notes	0	(4,740)
Proceeds from borrowings	20,000	0
Net cash used in financing activities	(2,620)	(59,623)
Net decrease in cash and cash equivalents	(121)	(94,648)
Cash and cash equivalents, beginning of period	28,312	148,013
Cash and cash equivalents, end of period	28,191	53,365
Cash paid during the period for:
Interest	$ 2,975	$ 16,781