Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (591,000)	$ (803,674,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion, and amortization	17,511,000	61,617,000
Impairments (Note 3)	0	741,924,000
Loss on abandonment of assets (Note 3)	0	17,554,000
Amortization of debt issuance costs and debt discount	0	567,000
(Gain) loss on derivatives (Note 11)	22,831,000	(483,000)
Cash receipts (payments) on derivatives settled (Note 11)	(3,304,000)	551,000
(Gain) loss on disposition of assets	(472,000)	390,000
Deferred tax benefit	0	(2,508,000)
Employee stock compensation plans	90,000	2,568,000
Credit loss expense	482,000	0
ARO liability accretion (Note 9)	461,000	596,000
Contract assets and liabilities, net (Note 4)	812,000	808,000
Noncash reorganization items	760,000	0
Other, net	(79,000)	(740,000)
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(2,498,000)	28,277,000
Material and supplies	0	35,000
Prepaid expenses and other	1,586,000	420,000
Accounts payable	(4,043,000)	(12,341,000)
Accrued liabilities	(4,287,000)	(4,840,000)
Income taxes	1,116,000	(917,000)
Contract advances	(71,000)	108,000
Net cash provided by operating activities	30,304,000	29,912,000
INVESTING ACTIVITIES:
Capital expenditures	(2,034,000)	(17,528,000)
Producing properties and other acquisitions	0	(210,000)
Proceeds from disposition of property and equipment	4,462,000	1,751,000
Net cash provided by (used in) investing activities	2,428,000	(15,987,000)
FINANCING ACTIVITIES:
Borrowings under line of credit	2,700,000	71,400,000
Payments under line of credit	(22,700,000)	(35,100,000)
Net payments on finance leases	(1,067,000)	(1,026,000)
Employee taxes paid by withholding shares	0	(43,000)
Bank overdrafts	(809,000)	8,733,000
Net cash provided by (used in) financing activities	(20,258,000)	26,498,000
Net increase in cash and cash equivalents	12,474,000	40,423,000
Cash, restricted cash, and cash equivalents, beginning of year	12,714,000	571,000
Cash, restricted cash, and cash equivalents, end of year	$ 25,188,000	$ 40,994,000