Supplemental Oil And Gas Information (Tables)

12 Months Ended

Dec. 31, 2019

Supplemental Oil And Gas Information [Abstract]

Schedule Of Capitalized Costs Related To Oil And Gas Producing Activities

	Years Ended December 31,
	2019		2018
Proved oil and gas properties	$	6,751	$	6,503
Unproved properties		—		23
Total proved and unproved oil and gas properties	$	6,751	$	6,526
Less accumulated depreciation, depletion and amortization		(2,366)		(1,722)
Net oil and gas properties	$	4,385	$	4,804

Schedule Of Oil And Gas Property Acquisition, Exploration And Development

	Years Ended December 31,
	2019		2018
Property acquisitions proved	$	—	$	164
Property acquisitions unproved		14		23
Exploration cost		491		590
Development cost		7		243
Total	$	512	$	1,020

Schedule Of Results Of Operations From Oil And Gas Producing Activities

	Years Ended December 31,
	2019		2018
Revenues	$	4,911	$	5,871
Production costs and taxes		(3,398)		(3,591)
Depreciation, depletion and amortization		(637)		(722)
Income from oil and gas producing activities	$	876	$	1,558

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, 2017	870	—	870
Revisions of previous estimates	223	—	223
Improved recovery	—	—	—
Purchase of reserves in place	13	—	13
Extensions and discoveries	86	—	86
Production	(98)	—	(98)
Sales of reserves in place	—	—	—
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
Proved developed reserves at:
December 31, 2017	832	—	832
December 31, 2018	976	—	976
December 31, 2019	803	—	803
Proved undeveloped reserves at:
December 31, 2017	38	—	38
December 31, 2018	118	—	118
December 31, 2019	—	—	—

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 12/31/2019						Year Ended 12/31/2018						Year Ended 12/31/2017
	Oil		Gas		Total		Oil		Gas		Total		Oil		Gas		Total
Total proved reserves    year-end reserve    report	$	8,365		—	$	8,365	$	13,976		—	$	13,976	$	8,170		—	$	8,170
Proved developed    producing reserves    (PDP)	$	7,592		—	$	7,592	$	12,534		—	$	12,534	$	7,065		—	$	7,065
% of PDP reserves to    total proved reserves		91%		—		91%		90%		—		90%		87%		—		87%
Proved developed non-    producing reserves	$	773		—	$	773	$	739		—	$	739	$	1,082		—	$	1,082
% of PDNP reserves to    total proved reserves		9%		—		9%		5%		—		5%		13%		—		13%
Proved undeveloped    reserves (PUD)	$	—		—	$	—	$	703		—	$	703	$	23		—	$	23
% 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,
	2019		2018		2017
Future cash inflows	$	40,655	$	65,871	$	39,889
Future production costs and taxes		(24,829)		(35,877)		(23,343)
Future development costs		(542)		(2,833)		(1,586)
Future income tax expenses		—		—		—
Future net cash flows		15,284		27,161		14,960
Discount at 10% for timing of cash flows		(6,919)		(13,185)		(6,790)
Standardized measure of discounted future net cash flows	$	8,365	$	13,976	$	8,170

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

	Years Ended December 31,
	2019		2018		2017
Balance, beginning of year	$	13,976	$	8,170	$	5,815
Sales, net of production costs and taxes		(1,646)		(2,611)		(1,239)
Discoveries and extensions, net of costs		154		798		123
Purchase of reserves in place		—		143		—
Sale of reserves in place		(26)		—		—
Net changes in prices and production costs		(3,348)		4,304		1,780
Revisions of quantity estimates		(3,058)		2,180		1,611
Previously estimated development cost incurred during the year		—		210		—
Changes in future development costs		1,016		78		(228)
Changes in timing and other		86		(4)		(164)
Accretion of discount		1,211		708		472
Net change in income taxes		—		—		—
Balance, end of year	$	8,365	$	13,976	$	8,170