Organization and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) Subsidiary Aircraft	Dec. 31, 2015 USD ($) Aircraft
Organization and Summary of Significant Accounting Policies [Abstract]
Number of wholly owned subsidiaries | Subsidiary	2
Aircraft Capitalization and Depreciation [Abstract]
Aircraft useful life	12 years
Capital Leased Assets [Line Items]
Impairment charge	$ 1,226,800	$ 1,282,300
Notes payable and accrued interest	125,837,900	107,621,600
Impairment of Long-lived Assets [Abstract]
Provision for impairment in value of aircraft	1,226,800	1,282,300
Revenue Recognition, Accounts Receivable and Allowance for Doubtful Accounts [Abstract]
Allowance for doubtful accounts	0	$ 0
Finance Leases [Abstract]
Number of aircraft held for lease | Aircraft		5
Interest earned on finance lease	868,100	$ 489,700
Credit Facility [Member]
Capital Leased Assets [Line Items]
Notes payable and accrued interest	110,183,600	110,435,600
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	1,348,100	1,946,600
Liabilities recorded at fair value	0	0
Aircraft [Member] | Held for Lease [Member]
Capital Leased Assets [Line Items]
Impairment charge	905,600	147,500
Impairment of Long-lived Assets [Abstract]
Provision for impairment in value of aircraft	905,600	147,500
Aircraft [Member] | Held for Sale [Member]
Capital Leased Assets [Line Items]
Impairment charge	$ 321,200	1,134,800
Fair value of assets		$ 3,689,100
Number of aircraft held for sale | Aircraft	3	5
Impairment of Long-lived Assets [Abstract]
Provision for impairment in value of aircraft	$ 321,200	$ 1,134,800