Organization and Summary of Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) Engine
Property Subject to or Available for Operating Lease [Line Items]
Impairment charge	$ 0	$ 11,718,700	$ 147,500	$ 18,518,700
Aircraft and aircraft engines held for lease, net	163,812,700		163,812,700		$ 186,762,600
Finance Leases [Abstract]
Number of leased engines returned to the Company | Engine					2
Interest earned on finance lease	184,000	0	275,400	150,000
Balance Sheets [Abstract]
Prepaid expenses and other	214,700		214,700		$ 415,900
Total assets	191,310,200		191,310,200		197,670,500
Notes payable and accrued interest	119,436,900		119,436,900		129,486,200
Total liabilities and stockholders' equity	191,310,200		191,310,200		197,670,500
As Reported Previously [Member]
Balance Sheets [Abstract]
Prepaid expenses and other					4,520,300
Total assets					201,774,900
Notes payable and accrued interest					133,590,600
Total liabilities and stockholders' equity					201,774,900
As Adjusted [Member]
Balance Sheets [Abstract]
Prepaid expenses and other					415,900
Total assets					197,670,500
Notes payable and accrued interest					129,486,200
Total liabilities and stockholders' equity					197,670,500
Effect of Change [Member]
Balance Sheets [Abstract]
Prepaid expenses and other					(4,104,400)
Total assets					(4,104,400)
Notes payable and accrued interest					(4,104,400)
Total liabilities and stockholders' equity					(4,104,400)
Recurring [Member]
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis [Abstract]
Money market funds included in cash and cash equivalents	2,245,800		2,245,800		1,044,300
Liabilities recorded at fair value	0		0		0
Turboprop Aircraft [Member] | Held for Lease [Member]
Property Subject to or Available for Operating Lease [Line Items]
Impairment charge	0
Aircraft and aircraft engines held for lease, net	1,317,000		1,317,000
Regional Jet Aircraft and Turboprop Aircraft [Member] | Held for Lease [Member]
Property Subject to or Available for Operating Lease [Line Items]
Impairment charge		2,906,400	147,500	2,906,400
Aircraft and aircraft engines held for lease, net		7,837,300		7,837,300
Regional Jet Aircraft and Turboprop Aircraft [Member] | Held for Sale [Member]
Property Subject to or Available for Operating Lease [Line Items]
Impairment charge		$ 8,812,300	0	$ 15,612,300
Fair value of assets	$ 5,147,600		$ 5,147,600		$ 6,522,900