Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2020	Aug. 31, 2020	Sep. 30, 2019
OPERATING ACTIVITIES:
Net income (loss)	$ (6,736)	$ (890,624)	$ (218,088)
Adjustments to reconcile net loss to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	7,467	115,496	198,632
Impairments (Note 4)	13,237	867,814	234,880
Loss on abandonment of assets (Note 4)	0	18,733	0
Amortization of debt issuance costs and debt discount	0	1,079	1,677
(Gain) loss on derivatives (Note 13)	(3,939)	10,704	(5,232)
Cash receipts (payments) on derivatives settled (Note 13)	(1,418)	(4,244)	11,829
Loss on disposition of assets	(222)	(89)	1,424
Write-off of debt issuance costs	0	(2,426)	0
Deferred tax benefit	0	(13,713)	(53,081)
Employee stock compensation plans	13	4,786	17,027
Bad debt expense	0	3,155	0
ARO liability accretion (Note 10)	116	1,545	1,770
Contract assets and liabilities, net (Note 5)	324	2,459	(1,930)
Noncash reorganization items	1,024	(138,797)	0
Other, net	(2,623)	12,164	562
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(2,202)	28,880	38,821
Material and supplies	0	89	(51)
Prepaid expenses and other	194	(3,849)	(1,873)
Accounts payable	2,366	(18,381)	(31,606)
Accrued liabilities	2,082	44,811	17,086
Income taxes	0	906	0
Contract advances	(9)	(394)	7,603
Net cash provided by operating activities	9,674	44,956	219,450
INVESTING ACTIVITIES:
Capital expenditures	(1,598)	(25,775)	(364,954)
Producing properties and other acquisitions	0	(382)	(3,345)
Proceeds from disposition of property and equipment	576	6,018	10,506
Net cash used in investing activities	(1,022)	(20,139)	(357,793)
FINANCING ACTIVITIES:
Borrowings under line of credit, including borrowings under DIP credit facility	0	87,400	392,200
Payments under line of credit	(4,000)	(64,100)	(254,000)
DIP financing costs	0	990	0
Exit facility financing costs	0	3,225	0
Net payments on finance leases	(350)	(2,757)	(2,984)
Employee taxes paid by withholding shares	0	(43)	(4,080)
Distributions to non-controlling interest	0	0	(918)
Bank overdrafts	0	8,733	(2,285)
Net cash provided by (used in) financing activities	(4,350)	7,552	132,503
Net increase (decrease) in cash and cash equivalents	4,302	32,369	(5,840)
Cash, restricted cash, and cash equivalents, beginning of year	32,940	571	6,452
Cash, restricted cash, and cash equivalents, end of year	$ 37,242	$ 32,940	$ 612