CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Mar. 31, 2017	Feb. 28, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (259,613)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	15,847
Write-down of oil and gas properties	256,435
Accretion expense	2,901
Deferred income tax provision	0
Gain on sale of oil and gas properties	0
Settlement of asset retirement obligations	(17,600)
Non-cash stock compensation expense	17
Non-cash derivative (income) expense	(2,484)
Non-cash interest expense	0
Non-cash reorganization items	0
Other non-cash expense	0
Change in current income taxes	0
Decrease in accounts receivable	6,728
(Increase) decrease in other current assets	964
Increase (decrease) in accounts payable	3,015
Increase (decrease) in other current liabilities	1,672
Investment in derivative contracts	(2,140)
Other	4,904
Net cash provided by (used in) operating activities	10,646
Cash flows from investing activities:
Investment in oil and gas properties	(5,584)
Proceeds from sale of oil and gas properties, net of expenses	10,770
Investment in fixed and other assets	(2)
Change in restricted funds	1,479
Net cash provided by (used in) investing activities	6,663
Cash flows from financing activities:
Proceeds from bank borrowings	0
Repayments of bank borrowings	0
Repayments of building loan	(36)
Cash payment to noteholders	0
Debt issuance costs	0
Net payments for share-based compensation	0
Net cash provided by (used in) financing activities	(36)
Effect of exchange rate changes on cash	0
Net change in cash and cash equivalents	17,273
Cash and cash equivalents, beginning of period	162,966
Cash and cash equivalents, end of period	180,239	$ 162,966
Predecessor
Cash flows from operating activities:
Net loss		630,317	$ (188,784)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization		37,429	61,558
Write-down of oil and gas properties		0	129,204
Accretion expense		5,447	9,983
Deferred income tax provision		0	2,877
Gain on sale of oil and gas properties		213,453	0
Settlement of asset retirement obligations		(3,641)	(4,667)
Non-cash stock compensation expense		2,645	2,312
Non-cash derivative (income) expense		1,778	192
Non-cash interest expense		0	4,635
Non-cash reorganization items		(458,677)	0
Other non-cash expense		172	6,081
Change in current income taxes		3,570	(1,074)
Decrease in accounts receivable		6,354	5,845
(Increase) decrease in other current assets		(2,274)	(185)
Increase (decrease) in accounts payable		(4,652)	(2,138)
Increase (decrease) in other current liabilities		(9,653)	3,898
Investment in derivative contracts		(3,736)	0
Other		2,490	(298)
Net cash provided by (used in) operating activities		(5,884)	29,439
Cash flows from investing activities:
Investment in oil and gas properties		(8,754)	(129,859)
Proceeds from sale of oil and gas properties, net of expenses		505,383	0
Investment in fixed and other assets		(61)	(496)
Change in restricted funds		(75,547)	1,045
Net cash provided by (used in) investing activities		421,021	(129,310)
Cash flows from financing activities:
Proceeds from bank borrowings		0	477,000
Repayments of bank borrowings		(341,500)	(20,000)
Repayments of building loan		(24)	(95)
Cash payment to noteholders		(100,000)	0
Debt issuance costs		1,055	0
Net payments for share-based compensation		(173)	(650)
Net cash provided by (used in) financing activities		(442,752)	456,255
Effect of exchange rate changes on cash		0	(9)
Net change in cash and cash equivalents		(27,615)	356,375
Cash and cash equivalents, beginning of period	$ 162,966	190,581	10,759
Cash and cash equivalents, end of period		$ 162,966	$ 367,134