Commitments And Contingencies (Narrative) (Details)			12 Months Ended	72 Months Ended
	Feb. 25, 2021	Mar. 21, 2016	Dec. 31, 2020 USD ($) $ / shares $ / bbl shares	Dec. 31, 2020 USD ($) $ / shares
Loss Contingencies [Line Items]
Cost reduction | $			$ 430,000	$ 430,000
Cost reduction paid into common stock | $			$ 117,000
Shares issued for services | shares			8,000
Share price | $ / shares			$ 14.88	$ 14.88
Period of trailing average of WTI			30 days
Reverse stock split		0.1
Subsequent Event [Member]
Loss Contingencies [Line Items]
Reverse stock split	0.083
Minimum [Member] | West Texas Intermediate [Member]
Loss Contingencies [Line Items]
Compensation reduction | $ / bbl			70
Compensation reimbursement | $ / bbl			85