Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Assets:
Accounts receivable, deferred rent	$ 220,100	$ 707,300
Aircraft and aircraft engines held for lease, accumulated depreciation	36,675,500	33,234,200
Accumulated depreciation	2,200
Accumulated amortization, favorable lease acquired	61,700	0
Liabilities:
Unamortized debt issuance costs	$ 674,300	$ 2,216,000
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	2,000,000	2,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	10,000,000	10,000,000
Common stock, outstanding (in shares)	1,545,884	1,416,699
Treasury stock (in shares)	213,332	213,300