Commitments And Contingencies (Narrative) (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) item $ / bbl
Loss Contingencies [Line Items]
Decrease in compensation | $	$ 205,000
Incidence Of Non-Compliance [Member]
Loss Contingencies [Line Items]
Wells issued incidence of non-compliance | item	1
Maximum potential loss | $	$ 386,000
Minimum [Member]
Loss Contingencies [Line Items]
Compensation reduction until WTI posting | $ / bbl	70
Compensation reimbursement at WTI posting | $ / bbl	85