Organization and Summary of Significant Accounting Policies, Aircraft Capitalization and Depreciation through Revenue Recognition, Accounts Receivable and Allowance for Doubtful Accounts (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) Option	Dec. 31, 2017 USD ($)	Oct. 01, 2018 USD ($)
Favorable Lease Acquired [Abstract]
Below market rents			$ 925,000
Number of bargain renewal options | Option	2
Term of bargain renewal option	1 year
Amortization recorded in the period	$ 61,700	$ 0
Amortization, below market rents, 2019	246,700
Amortization, below market rents, 2020	246,700
Amortization, below market rents, 2021	246,700
Amortization, below market rents, 2022	123,200
Impairment of Long-lived Assets [Abstract]
Provision for impairment in value of aircraft	2,971,500	1,002,100
Taxes [Abstract]
Valuation allowance, deferred tax assets	0
Revenue Recognition, Accounts Receivable and Allowance for Doubtful Accounts [Abstract]
Allowance for doubtful accounts	$ 0	$ 0
Aircraft [Member]
Aircraft Capitalization and Depreciation [Abstract]
Useful life	12 years
Leasehold Improvements [Member]
Aircraft Capitalization and Depreciation [Abstract]
Useful life	5 years