Subsequent Events (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Gain on finance lease		$ 1,216,700	$ 5,179,200
Turboprop Aircraft [Member] | Financing Lease [Member]
Subsequent Event [Line Items]
Gain on finance lease		$ 1,208,100	$ 4,262,800
Subsequent Event [Member] | Turboprop Aircraft [Member] | Financing Lease [Member]
Subsequent Event [Line Items]
Gain on finance lease	$ 297,400