Asset Retirement Obligation (Schedule of Asset Retirement Obligation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Asset Retirement Obligations, Roll Forward Analysis [Roll Forward]
Beginning of year	$ 2,307,000	$ 1,523,400
Accretion expense	132,000	90,400
Revisions		693,200
End of year	$ 2,439,000	$ 2,307,000