Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ 10,707
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Accretion of asset retirement obligations	114
Cash flows from financing activities:
Cash and cash equivalents, beginning of period	134,083
Cash and cash equivalents, end of period	54,874
Successor
Cash flows from operating activities:
Net income (loss)	10,707
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Accretion of asset retirement obligations	114
Depreciation, depletion and amortization	26,046
Equity based compensation expense	2,610
(Gain) loss on sale of oil and natural gas properties	(166)
Net gain on derivative instruments	(3,759)
Net cash (paid) received for derivative settlements	(397)
Amortization of debt issuance costs	93
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	(9,143)
(Increase) decrease in prepaid and other assets	(382)
(Decrease) increase in accounts payable and other liabilities	(6,475)
Net cash provided by operating activities	19,248
Cash flows from investing activities:
Acquisition of oil and natural gas properties	(38,678)
Development of oil and natural gas properties	(62,121)
Purchases of other property and equipment	(1,139)
Proceeds from sales of oil and natural gas properties and other assets	3,518
Net cash used in investing activities	(98,420)
Cash flows from financing activities:
Proceeds from revolving credit facility	0
Repayment of revolving credit facility	0
Financing obligation	0
Debt issuance costs	(37)
Net cash (used in) provided by financing activities	(37)
Net decrease in cash and cash equivalents	(79,209)
Cash and cash equivalents, beginning of period	134,083
Cash and cash equivalents, end of period	54,874
Supplemental cash flow information
Cash paid for interest	226
Supplemental noncash activity
Accrued capital expenditures included in accounts payable and accrued expenses	63,978
Asset retirement obligations incurred, including changes in estimate	$ 274
Predecessor
Cash flows from operating activities:
Net income (loss)		$ (14,461)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Accretion of asset retirement obligations		40
Depreciation, depletion and amortization		21,263
Equity based compensation expense		0
(Gain) loss on sale of oil and natural gas properties		4
Net gain on derivative instruments		(1,918)
Net cash (paid) received for derivative settlements		8,629
Amortization of debt issuance costs		122
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable		4,234
(Increase) decrease in prepaid and other assets		9
(Decrease) increase in accounts payable and other liabilities		630
Net cash provided by operating activities		18,552
Cash flows from investing activities:
Acquisition of oil and natural gas properties		(6,180)
Development of oil and natural gas properties		(16,206)
Purchases of other property and equipment		(33)
Proceeds from sales of oil and natural gas properties and other assets		0
Net cash used in investing activities		(22,419)
Cash flows from financing activities:
Proceeds from revolving credit facility		5,000
Repayment of revolving credit facility		(2,000)
Financing obligation		(803)
Debt issuance costs		0
Net cash (used in) provided by financing activities		2,197
Net decrease in cash and cash equivalents		(1,670)
Cash and cash equivalents, beginning of period		1,768
Cash and cash equivalents, end of period		98
Supplemental cash flow information
Cash paid for interest		1,478
Supplemental noncash activity
Accrued capital expenditures included in accounts payable and accrued expenses		13,000
Asset retirement obligations incurred, including changes in estimate		$ 142