Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES:
Net loss	$ (10,706)	$ (1,019,239)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion, and amortization	33,875	97,577
Impairments (Note 3)	0	851,242
Loss on abandonment of assets (Note 3)	0	17,554
Amortization of debt issuance costs and debt discount	0	1,079
Loss on derivatives (Note 12)	65,231	6,454
Cash payments on derivatives settled (Note 12)	(9,707)	(691)
Loss on change in fair value of warrants (Note 13)	3,574	0
(Gain) loss on disposition of assets	(2,182)	1,267
Write-off of debt issuance costs	0	2,426
Deferred tax benefit	0	(8,963)
Stock-based compensation plans	350	4,179
Credit loss expense	482	1,923
ARO liability accretion (Note 9)	931	1,169
Contract assets and liabilities, net (Note 4)	1,584	1,790
Capitalized contract fulfillment costs, net	26	0
Noncash reorganization items	433	7,027
Other, net	(1,035)	11,493
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(6,336)	26,587
Material and supplies	0	43
Prepaid expenses and other	2,536	(2,703)
Accounts payable	(2,279)	(22,876)
Accrued liabilities	(3,852)	48,244
Income taxes	1,116	906
Contract advances	(76)	(21)
Net cash provided by operating activities	73,965	26,467
INVESTING ACTIVITIES:
Capital expenditures	(7,673)	(23,804)
Producing properties and other acquisitions	0	(210)
Proceeds from disposition of property and equipment	15,278	4,497
Net cash provided by (used in) investing activities	7,605	(19,517)
FINANCING ACTIVITIES:
Borrowings under line of credit, including borrowings under DIP credit facility	3,900	79,400
Payments under line of credit	(67,900)	(38,100)
Payment of DIP Financing Costs	0	(990)
Net payments on finance leases	(3,216)	(2,061)
Employee taxes paid by withholding shares	0	(43)
Distributions to non-controlling interest	(12,344)	0
Repurchase of common stock	(9,048)	0
Bank overdrafts	(1,313)	8,733
Net cash provided by (used in) financing activities	(87,295)	29,473
Net increase in cash and cash equivalents	(5,725)	36,423
Cash, restricted cash, and cash equivalents, beginning of year	12,714	571
Cash, restricted cash, and cash equivalents, end of year	$ 6,989	$ 36,994