Description Of Business And Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2012
Description Of Business And Significant Accounting Policies [Line Items]
Material natural gas imbalances	$ 0		$ 0		$ 0
Methane gas revenue			0	$ 0
Restricted cash	386,000		386,000		386,000
Unevaluated properties	552,000		$ 552,000		$ 462,000
Current cost discount			10.00%
Impairment	$ 7,189,000	$ 0	$ 7,189,000	$ 0
Collateralized Bond [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Restricted cash						$ 386,000