Description Of Business And Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Mar. 27, 2020
Description Of Business And Significant Accounting Policies [Line Items]
Unevaluated properties	$ 0		$ 0		$ 0
Impairment			0	$ 0
Accounts receivable - current	262,000		262,000		557,000
Allowance for doubtful accounts	0		0		0
Revenue	765,000	$ 1,215,000	2,292,000	$ 3,777,000
Refundable credits	$ 130,000		130,000
Tax [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Accounts receivable - current					65,000	$ 65,000
Accounts receivable - noncurrent					65,000
Natural Gas Imbalances [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Revenue			$ 0		$ 0