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Aircraft and Aircraft Engines Held for Lease or Sale (Details)	1 Months Ended			12 Months Ended
	Jan. 31, 2017 Aircraft	May 31, 2016 USD ($)	Apr. 30, 2016 Aircraft	Dec. 31, 2016 USD ($) Aircraft Asset	Dec. 31, 2015 USD ($) Aircraft
Aircraft and aircraft engines held for lease or sale [Abstract]
Proceeds from insurance				$ 18,886,700	$ 0
Gain from insurance				2,149,600	6,790,700
Proceeds from the sale of airframe parts				3,422,800	3,616,400
Impairment charge				1,226,800	$ 1,282,300
Minimum Future Lease Revenue Payments Receivable Under Noncancelable Operating Leases [Abstract]
2017				26,505,700
2018				22,727,900
2019				22,299,700
2020				19,665,200
2021				12,343,000
Thereafter				30,908,100
Total				$ 134,449,600
Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft				12	16
Percentage of net book value				23.00%	45.00%
Number of aircraft involved in accident \| Aircraft			1
Proceeds from insurance		$ 17,640,000		$ 1,246,700
Gain from insurance		$ 2,146,500
Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft				12	8
Percentage of net book value				73.00%	49.00%
Engines [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number owned \| Aircraft				4	5
Percentage of net book value				4.00%	6.00%
Held for Lease [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Percentage of net book value				7.00%
Payment for equipment and acquisition costs related to aircraft purchased				$ 54,357,600	$ 1,333,700
Proceeds from maintenance reserves				$ 17,179,300
Number of aircraft for which maintenance reserve received \| Aircraft				2
Number of assets off lease \| Asset				6
Held for Lease [Member] \| Turboprop Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Gain on sale of airframes					$ 5,713,600
Number of aircraft sold \| Aircraft					2
Number of assets off lease \| Asset				4
Held for Lease [Member] \| Turboprop Aircraft [Member] \| Subsequent Event [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of aircraft sold \| Aircraft	1
Held for Lease [Member] \| Engines [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of assets off lease \| Asset				2
Held for Sale [Member] \| Turboprop Airframe [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Gain on sale of airframes				$ 3,100
Number of aircraft sold \| Aircraft				3
Proceeds from the sale of airframe parts				$ 175,300	$ 313,800
Held for Sale [Member] \| Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Number of aircraft sold \| Aircraft				4
Impairment charge				$ 75,000
Number of aircraft impaired \| Aircraft				2
Held for Sale [Member] \| Spare Engine [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Impairment charge				$ 246,200
Held for Sale [Member] \| Turboprop Aircraft and Regional Jet Aircraft [Member]
Aircraft and aircraft engines held for lease or sale [Abstract]
Gain on sale of airframes					$ 1,077,100