Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 22,202	$ 8,836
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred tax expense benefit	0	(491)
Depreciation, depletion and amortization	42,130	27,407
Accretion of asset retirement obligation	1,499	660
Share-based compensation expense	2,716	1,780
Amortization costs and other	1,094	406
Non-cash derivative income	0	(157)
Payments to settle asset retirement obligations	(1,149)	(94)
Changes in working capital accounts:
Revenue receivable	455	3,735
Prepaid drilling costs	134	(801)
Joint interest billing receivable	8,589	10,314
Accounts payable and accrued liabilities	8,614	(19,195)
Advances from co-owners	15,438	(8,548)
Other	1,022	(3,237)
Net cash provided by operating activities	102,744	20,615
Cash flows from investing activities:
Investment in oil and gas properties	(76,993)	(52,740)
Investment in other property and equipment	(468)	(257)
Deposit on acquisition	0	(5,000)
Sale of oil and gas properties	371	18,914
Sale of unevaluated oil and gas properties	229	0
Net cash used in investing activities	(76,861)	(39,083)
Cash flows from financing activities:
Net proceeds for share based compensation	1,039	20
Deferred financing costs	(109)	(774)
Payment of preferred stock dividend	(2,565)	(2,569)
Proceeds from bank borrowings	10,000	40,000
Repayment of bank borrowings	(12,500)	(25,000)
Net cash provided by (used in) financing activities	(4,135)	11,677
Net increase (decrease) in cash and cash equivalents	21,748	(6,791)
Cash and cash equivalents, beginning of period	9,153	14,904
Cash and cash equivalents, end of period	30,901	8,113
Cash paid during the period for:
Interest	18,700	8,321
Income taxes	$ 0	$ 40