Property, Plant and Equipment (Summary of Natural Gas and Oil Properties) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	$ 26,088,200	$ 26,088,600
Accumulated depletion and impairment	(25,398,000)	(24,589,200)
Gas and oil properties, net	690,200	1,499,400
Leasehold interest
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	332,100	332,100
Wells and related equipment
Property Plant And Equipment [Line Items]
Total natural gas and oil properties	$ 25,756,100	$ 25,756,500