Operating Segments (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)
Operating Segments [Abstract]
Number of business segments | Segment	1
Operating lease revenues derived from lessees domiciled in the United States	21.00%	17.00%
Segment Reporting Information [Line Items]
Operating Lease Revenue	$ 29,002,700	$ 24,464,500
Net Book Value of Aircraft and Aircraft Engines Held for Lease	195,098,200	192,799,800
Finance Lease Revenue	1,571,500	868,100
Europe and United Kingdom [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	14,941,100	9,999,900
Net Book Value of Aircraft and Aircraft Engines Held for Lease	92,108,500	105,088,300
North America [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	8,506,700	6,840,500
Net Book Value of Aircraft and Aircraft Engines Held for Lease	72,270,700	42,824,300
Off lease [Member]
Segment Reporting Information [Line Items]
Net Book Value of Aircraft and Aircraft Engines Held for Lease	24,636,900	13,113,200
Africa [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	3,306,100	4,430,300
Net Book Value of Aircraft and Aircraft Engines Held for Lease	0	21,724,400
Finance Lease Revenue	1,180,600	868,100
Asia [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	1,251,300	1,800,400
Net Book Value of Aircraft and Aircraft Engines Held for Lease	6,082,100	6,463,700
Australia [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	997,500	1,140,000
Net Book Value of Aircraft and Aircraft Engines Held for Lease	0	3,585,900
Central and South America [Member]
Segment Reporting Information [Line Items]
Operating Lease Revenue	0	253,400
United Kingdom [Member]
Segment Reporting Information [Line Items]
Finance Lease Revenue	$ 390,900	$ 0