Condensed Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 Successor	Jun. 30, 2013 Predecessor
Cash flow from operating activities:
Net income	$ 158,706	$ 93,798
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	146,384	138,750
Stock-based compensation expense	0	5,903
Amortization and write-off of deferred financing fees	(5,492)	3,438
Change in book overdraft	0	(14,885)
Deferred income taxes	(82)	61,639
Other, net	0	5,382
Derivatives activities:
Total (gains) losses	22,097	(34,885)
Cash settlements	(10,472)	4,844
Changes in assets and liabilities:
Increase in accounts receivable – trade, net	(34,294)	(16,518)
Decrease in other assets	1,486	242
Increase (decrease) in accounts payable and accrued expenses	11,869	(11,470)
Decrease in other liabilities	(25,473)	(4,278)
Net cash provided by operating activities	264,729	231,960
Cash flow from investing activities:
Property acquisitions	0	(3,080)
Development of oil and natural gas properties	(269,129)	(302,724)
Purchases of other property and equipment	(5,625)	(3,954)
Proceeds from sale of properties and equipment and other	0	11,511
Net cash used in investing activities	(274,754)	(298,247)
Cash flow from financing activities:
Proceeds from borrowings	0	490,700
Repayments of debt	(206,124)	(407,600)
Dividends paid	0	(8,803)
Financing fees and other, net	(10,866)	(223)
Proceeds from stock option exercises	0	65
Capital contribution from affiliate	220,000	0
Distribution to affiliate	(41,537)	0
Excess tax benefit from stock-based compensation	0	750
Net cash provided by (used in) financing activities	(38,527)	74,889
Net increase (decrease) in cash and cash equivalents	(48,552)	8,602
Cash and cash equivalents:
Beginning	51,041	312
Ending	$ 2,489	$ 8,914