Summary of Significant Accounting Policies (Summary of Gas and Oil Properties) (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	$ 42,582,700	$ 42,582,700
Accumulated depletion and impairment	(41,045,500)	(40,819,600)
Gas and oil properties, net	1,537,200	1,763,100
Leasehold interests
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	695,700	695,700
Wells and related equipment
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	$ 41,887,000	$ 41,887,000