Description Of Business And Significant Accounting Policies (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2012
Description Of Business And Significant Accounting Policies [Line Items]
Material natural gas imbalances	$ 0		$ 0
Methane gas revenue	0	$ 0
Restricted cash	386,000		386,000
Unevaluated properties	$ 552,000		$ 462,000
Collateralized Bond [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Restricted cash				$ 386,000