Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Condensed Consolidated Statements of Cash Flows (Unaudited) [Abstract]
Net cash provided by operating activities	$ 14,543,600	$ 13,363,000
Investing activities:
Proceeds from sale of aircraft and aircraft engines held for lease, net of re-sale fees	8,382,000	2,980,000
Proceeds from sale of assets held for sale, net of re-sale fees	4,366,200	160,100
Investment in direct financing leases	0	(7,614,200)
Investment in aircraft parts and acquisition costs	(22,702,900)	(32,063,100)
Net cash used in investing activities	(9,954,700)	(36,537,200)
Financing activities:
Issuance of notes payable - Credit Facility	21,000,000	35,900,000
Repayment of notes payable - Credit Facility	(24,200,000)	(4,800,000)
Repayment of notes payable - special purpose financing	(3,207,200)	(3,066,000)
Debt issuance costs	(70,000)	(525,000)
Net cash (used in)/provided by financing activities	(6,477,200)	27,509,000
Net (decrease)/increase in cash and cash equivalents	(1,888,300)	4,334,800
Cash and cash equivalents, beginning of period	8,657,800	2,194,400
Cash and cash equivalents, end of period	$ 6,769,500	$ 6,529,200