Commitments And Contingencies (Narrative) (Details)	3 Months Ended	51 Months Ended
	Mar. 31, 2019 USD ($) $ / bbl shares	Mar. 31, 2019 USD ($)	Mar. 29, 2019 $ / shares	Sep. 30, 2012 USD ($)
Loss Contingencies [Line Items]
Cost reduction		$ 432,000
Cost reduction paid into common stock	$ 103,000
Shares issued for services | shares	100,000
Share price | $ / shares			$ 1.03
Period of trailing average of WTI	30 days
Incidence Of Non-Compliance [Member]
Loss Contingencies [Line Items]
Maximum potential loss				$ 386,000
Minimum [Member] | West Texas Intermediate [Member]
Loss Contingencies [Line Items]
Compensation reimbursement | $ / bbl	85
Compensation reduction | $ / bbl	70