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Aircraft and Aircraft Engines Held for Lease or Sale (Details)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2017 Aircraft	Sep. 30, 2017 USD ($) Aircraft	Sep. 30, 2016 USD ($) Aircraft	Sep. 30, 2017 USD ($) Aircraft Asset	Sep. 30, 2016 USD ($) Aircraft	Dec. 31, 2016 Aircraft
Aircraft and aircraft engines held for lease or sale [Abstract]
Payment for equipment and acquisition costs related to aircraft purchased				$ 7,614,200	$ 0
Gain (loss) on sale of assets		$ 3,500	$ 2,800	(130,400)	2,149,200
Proceeds from the sale of airframe parts				160,100	2,675,200
Asset Impairment Charges		68,800	$ 0	523,100	321,200
Minimum future lease revenue payments receivable under noncancelable operating leases [Abstract]
Remainder of 2017		6,955,100		6,955,100
2018		25,882,900		25,882,900
2019		25,455,200		25,455,200
2020		23,003,000		23,003,000
2021		15,901,600		15,901,600
Thereafter		43,391,400		43,391,400
Total		$ 140,589,200		$ 140,589,200
Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft		15		15		12
Percentage of net book value		81.00%		81.00%		73.00%
Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft		10		10		12
Percentage of net book value		17.00%		17.00%		23.00%
Turboprop Aircraft [Member] \| Subsequent Event [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of aircraft sold \| Aircraft	1
Number of assets returned \| Aircraft	1
Engines [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft		2		2		4
Percentage of net book value		2.00%		2.00%		4.00%
Held for Lease [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Percentage of net book value		8.00%		8.00%
Number of aircraft purchased \| Aircraft			4
Payment for equipment and acquisition costs related to aircraft purchased			$ 52,138,000
Proceeds from maintenance reserves					$ 17,179,300
Number of aircraft for which maintenance reserve received \| Aircraft					2
Number of assets held for lease, off lease \| Asset				8
Held for Lease [Member] \| Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Payment for equipment and acquisition costs related to aircraft purchased		$ 10,557,400
Held for Lease [Member] \| Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for lease, off lease \| Asset				6
Held for Lease [Member] \| Turboprop Aircraft [Member] \| Subsequent Event [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets returned \| Aircraft	1
Held for Lease [Member] \| Engines [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for lease, off lease \| Asset				2
Held for Sale [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Proceeds from the sale of airframe parts		47,500	41,400
Asset Impairment Charges		$ 44,000	38,600
Held for Sale [Member] \| Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale \| Aircraft		1		1
Held for Sale [Member] \| Engines [Member] \| Subsequent Event [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale \| Aircraft	1
Held for Sale [Member] \| Turboprop Airframe [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of aircraft sold \| Aircraft		2
Gain (loss) on sale of assets		$ 3,500	$ 2,800
Number of assets held for sale \| Aircraft		1		1
Held for Sale [Member] \| Turboprop Airframe [Member] \| Subsequent Event [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale \| Aircraft	1
Held for Sale [Member] \| Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets held for sale \| Aircraft		3		3