Aircraft and Aircraft Engines Held for Lease or Sale (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) Aircraft	Dec. 31, 2017 USD ($) Aircraft
Aircraft and aircraft engines held for lease or sale [Abstract]
Payment for purchase and capital improvement of aircraft	$ 22,844,300	$ 32,063,100
Gain (loss) on sale of aircraft and aircraft parts	(3,408,700)	791,500
Income from unpaid maintenance reserves	1,629,000	3,886,900
Impairment charge	2,971,500	1,002,100
Proceeds from the sale of airframe parts	4,945,200	$ 193,000
Minimum future lease revenue payments receivable under noncancelable operating leases [Abstract]
2019	28,357,100
2020	25,773,700
2021	18,672,300
2022	16,714,700
2023	13,031,900
Thereafter	21,610,600
Total	$ 124,160,300
Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned | Aircraft	13	13
Percentage of net book value	81.00%	82.00%
Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned | Aircraft	4	10
Percentage of net book value	18.00%	17.00%
Engines [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned | Aircraft	1	1
Percentage of net book value	1.00%	1.00%
Aircraft Parts [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Gain (loss) on sale of aircraft and aircraft parts	$ 90,300	$ 87,400
Impairment charge	1,135,700
Proceeds from the sale of airframe parts	1,280,100	193,100
Accrued receivables	133,100	779,700
Carrying value of parts sold	$ 543,200	$ 885,400
Held for Sale [Member] | Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale | Aircraft	3
Held for Sale [Member] | Turboprop Airframe [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale | Aircraft	2
Held for Sale [Member] | Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Gain (loss) on sale of aircraft and aircraft parts	$ (1,072,400)
Impairment charge	1,835,800
Held for Lease [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Income from unpaid maintenance reserves	1,629,000
Number of aircraft returned | Aircraft		3
Held for Lease [Member] | Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Payment for purchase and capital improvement of aircraft	$ 22,844,300	$ 32,063,100
Number of aircraft purchased | Aircraft	2
Number of aircraft sold | Aircraft	4
Number of aircraft reclassified to Held for Sale | Aircraft	4
Gain (loss) on sale of aircraft and aircraft parts	$ (2,426,600)