Supplemental Oil And Gas Information (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Oil And Gas Information [Abstract]

Schedule Of Capitalized Costs Related To Oil And Gas Producing Activities

	Years Ended December 31,
	2020		2019
Oil and gas properties	$	6,752	$	6,751
Ceiling test impairment	$	(3,855)	$	—
Oil and gas properties, net of ceiling test impairment	$	2,897	$	6,751
Unevaluated properties		—		—
Accumulated depreciation, depletion and amortization		(2,935)		(2,366)
Ceiling test impairment		2,935		—
Accumulated depreciation, depletion and amortization, net of ceiling test impairment		—		(2,366)
Oil and gas properties, net	$	2,897	$	4,385

Schedule Of Oil And Gas Property Acquisition, Exploration And Development

	Years Ended December 31,
	2020		2019
Property acquisitions proved	$	—	$	—
Property acquisitions unproved		6		14
Exploration cost		1		491
Development cost		14		7
Total	$	21	$	512

Schedule Of Results Of Operations From Oil And Gas Producing Activities

	Years Ended December 31,
	2020		2019
Revenues	$	3,038	$	4,911
Production costs and taxes		(3,104)		(3,398)
Depletion		(569)		(637)
Income (loss) from oil and gas producing activities	$	(635)	$	876

Schedule Of Net Proved Oil And Gas Reserves And The Changes In Net Proved Oil And Gas Reserves

	Oil (MBbl)	Gas (MMcf)	MBOE
Proved reserves at December 31, 2018	1,094	—	1,094
Revisions of previous estimates	(203)	—	(203)
Improved recovery	—	—	—
Purchase of reserves in place	—	—	—
Extensions and discoveries	8	—	8
Production	(94)	—	(94)
Sales of reserves in place	(2)	—	(2)
Proved reserves at December 31, 2019	803	—	803
Revisions of previous estimates	(200)	—	(200)
Improved recovery	—	—	—
Purchase of reserves in place	—	—	—
Extensions and discoveries	—	—	—
Production	(86)	—	(86)
Sales of reserves in place	—	—	—
Proved reserves at December 31, 2020	517	—	517
Proved developed reserves at:
December 31, 2018	976	—	976
December 31, 2019	803	—	803
December 31, 2020	517	—	517
Proved undeveloped reserves at:
December 31, 2018	118	—	118
December 31, 2019	—	—	—
December 31, 2020	—	—	—

Schedule Of Reserve Value By Category And The Respective Present Values, Before Income Taxes, Discounted At 10% As A Percentage Of Total Proved Reserves

	Year Ended 12/31/2020						Year Ended 12/31/2019						Year Ended 12/31/2018
	Oil		Gas		Total		Oil		Gas		Total		Oil		Gas		Total
Total proved reserves    year-end reserve    report	$	2,897		—	$	2,897	$	8,365		—	$	8,365	$	13,976		—	$	13,976
Proved developed    producing reserves    (PDP)	$	2,598		—	$	2,598	$	7,592		—	$	7,592	$	12,534		—	$	12,534
% of PDP reserves to    total proved reserves		90%		—		90%		91%		—		91%		90%		—		90%
Proved developed non-    producing reserves	$	299		—	$	299	$	773		—	$	773	$	739		—	$	739
% of PDNP reserves to    total proved reserves		10%		—		10%		9%		—		9%		5%		—		5%
Proved undeveloped    reserves (PUD)	$	—		—	$	—	$	—		—	$	—	$	703		—	$	703
% of PUD reserves to    total proved reserves		—		—		—		—		—		—		5%		—		5%

Schedule Of Standardized Measure Of Discounted Futures Net Cash Flows From Proved Oil And Gas Reserves

	Years Ended December 31,
	2020		2019		2018
Future cash inflows	$	18,036	$	40,655	$	65,871
Future production costs and taxes		(12,664)		(24,829)		(35,877)
Future development costs		(538)		(542)		(2,833)
Future income tax expenses		—		—		—
Future net cash flows		4,834		15,284		27,161
Discount at 10% for timing of cash flows		(1,937)		(6,919)		(13,185)
Standardized measure of discounted future net cash flows	$	2,897	$	8,365	$	13,976

Schedule Of Changes In The Standardized Measure Of Discounted Future Net Cash Flows From Proved Oil And Gas Reserves

	Years Ended December 31,
	2020		2019		2018
Balance, beginning of year	$	8,365	$	13,976	$	8,170
Sales, net of production costs and taxes		(210)		(1,646)		(2,611)
Discoveries and extensions, net of costs		—		154		798
Purchase of reserves in place		—		—		143
Sale of reserves in place		—		(26)		—
Net changes in prices and production costs		(2,893)		(3,348)		4,304
Revisions of quantity estimates		(2,353)		(3,058)		2,180
Previously estimated development cost incurred during the year		—		—		210
Changes in future development costs		(314)		1,016		78
Changes in timing and other		(389)		86		(4)
Accretion of discount		691		1,211		708
Net change in income taxes		—		—		—
Balance, end of year	$	2,897	$	8,365	$	13,976