Income Taxes (Details 2) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Current and prior year tax losses	$ 4,980,100	$ 4,065,100
Foreign tax credit	758,400	611,900
Deferred interest expense	269,800	81,800
Maintenance reserves	470,000	3,100,800
Deferred derivative losses	452,100	0
Deferred maintenance, bad debt allowance and other	19,800	92,500
Alternative minimum tax credit	11,400	45,500
Deferred tax assets	6,961,600	7,997,600
Deferred tax liabilities
Accumulated depreciation on aircraft and aircraft engines	(8,666,700)	(14,773,800)
Deferred income	(175,600)	(320,600)
Favorable Lease	(131,400)	(185,400)
Net deferred tax liabilities	(2,012,100)	(7,282,200)
Deferred tax asset	517,700	254,900
Deferred income taxes (liability)	(2,529,800)	(7,537,100)
Net deferred tax liabilities	$ (2,012,100)	$ (7,282,200)