Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 08, 2018	Mar. 31, 2018	Mar. 31, 2019
Cash flows from operating activities:
Net loss		$ (33,754)	$ (17,435)
Adjustments to reconcile net loss to cash from operating activities:
Depreciation, depletion and amortization		15,679	37,899
Non-cash lease expense		0	847
Provision for uncollectible related party receivables		0	853
Impairment of assets		0	0
Amortization of deferred financing costs		0	120
Amortization of debt premium		(820)	(1,231)
Equity-based compensation expense		3,466	2,679
Non-cash exploration expense		819	181
(Gain) loss on derivatives		22,011	23,777
Cash settlements of derivatives		(3,975)	365
Interest converted into debt		0	0
Interest added to notes receivable from affiliate		(163)	0
Deferred tax provision (benefit)		(3,874)	0
Loss on sale of fixed assets		0	0
Equity in earnings of unconsolidated subsidiaries		0	(99)
Impact on cash from changes in:
Accounts receivable		(3,746)	5,906
Other receivables		997	4,093
Related party receivables		(1,510)	179
Prepaid expenses and other assets		(2,193)	(3,783)
Advances from related party		(7,008)	(5,360)
Settlement of asset retirement obligations		(166)	(147)
Accounts payable, accrued liabilities and other liabilities		(72,323)	(3,293)
Operating lease obligations		0	(748)
Cash from operating activities		(86,560)	44,803
Cash flows from investing activities:
Capital expenditures		(133,055)	(161,348)
Acquisitions, net of cash acquired		(796,827)	0
Proceeds withdrawn from trust account		1,042,742	0
Cash from investing activities		112,860	(161,348)
Cash flows from financing activities:
Proceeds from long-term debt borrowings		9,000	126,000
Repayments of long-term debt		(134,065)	0
Deferred financing costs paid		(1,007)	0
Capital distributions		0	0
Proceeds from issuance of Class A shares		400,000	0
Repayment of sponsor note		(2,000)	0
Repayment of deferred underwriting compensation		(36,225)	0
Redemption of Class A common shares		(33)	0
Cash from financing activities		235,670	126,000
Net increase in cash, cash equivalents and restricted cash		261,970	9,455
Cash, cash equivalents and restricted cash, beginning of period		388	27,855
Cash, cash equivalents and restricted cash, end of period	$ 388	262,358	$ 37,310
Predecessor
Cash flows from operating activities:
Net loss	(14,862)
Adjustments to reconcile net loss to cash from operating activities:
Depreciation, depletion and amortization	12,554
Non-cash lease expense	0
Provision for uncollectible related party receivables	0
Impairment of assets	5,560
Amortization of deferred financing costs	171
Amortization of debt premium	0
Equity-based compensation expense	0
Non-cash exploration expense	4,575
(Gain) loss on derivatives	(6,663)
Cash settlements of derivatives	(2,296)
Interest converted into debt	103
Interest added to notes receivable from affiliate	(85)
Deferred tax provision (benefit)	0
Loss on sale of fixed assets	1,923
Equity in earnings of unconsolidated subsidiaries	0
Impact on cash from changes in:
Accounts receivable	(21,184)
Other receivables	(662)
Related party receivables	(117)
Prepaid expenses and other assets	(591)
Advances from related party	24,116
Settlement of asset retirement obligations	(63)
Accounts payable, accrued liabilities and other liabilities	23,857
Operating lease obligations	0
Cash from operating activities	26,336
Cash flows from investing activities:
Capital expenditures	(36,695)
Acquisitions, net of cash acquired	(1,218)
Proceeds withdrawn from trust account	0
Cash from investing activities	(37,913)
Cash flows from financing activities:
Proceeds from long-term debt borrowings	60,000
Repayments of long-term debt	(43,000)
Deferred financing costs paid	0
Capital distributions	(68)
Proceeds from issuance of Class A shares	0
Repayment of sponsor note	0
Repayment of deferred underwriting compensation	0
Redemption of Class A common shares	0
Cash from financing activities	16,932
Net increase in cash, cash equivalents and restricted cash	5,355
Cash, cash equivalents and restricted cash, beginning of period	4,990	$ 10,345
Cash, cash equivalents and restricted cash, end of period	$ 10,345