Commitments And Contingencies (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) item $ / bbl	Sep. 30, 2015 USD ($)
Commitments And Contingencies [Line Items]
Decrease in compensation | $	$ 243,000
Incidence Of Non-Compliance [Member]
Commitments And Contingencies [Line Items]
Wells issued incidence of non-compliance | item	1
Maximum range of possible payment | $		$ 386,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Compensation reduction until WTI posting | $ / bbl	70
Compensation reimbursement at WTI posting | $ / bbl	85