Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Current tax provision [Abstract]
Federal	$ 0	$ 1,000
State	800	800
Foreign	7,100	371,100
Current tax provision	7,900	372,900
Deferred tax provision [Abstract]
Federal	1,838,000	2,310,100
State	1,100	14,700
Decrease in valuation allowance	(158,600)	0
Deferred tax provision	1,680,500	2,324,800
Total income tax provision	1,688,400	2,697,700
Income tax rate reconciliation [Abstract]
Income tax provision at statutory federal income tax rate	1,668,100	2,681,500
State tax provision, net of federal benefit	19,400	33,200
Prior year withholding tax adjustment	174,600	0
Decrease in valuation allowance	(158,600)	0
Other	(15,100)	(17,000)
Total income tax provision	1,688,400	2,697,700
Deferred tax assets [Abstract]
Net operating loss carryovers	0	932,000
Foreign tax credit carryover	1,198,100	1,830,000
Unearned revenue	103,800	0
Alternative minimum tax credit	100,800	100,800
Bad debt allowance and other	490,100	936,500
Deferred tax assets	1,892,800	3,799,300
Deferred tax liabilities [Abstract]
Accumulated depreciation on aircraft and aircraft engines	(17,343,000)	(17,471,100)
Minimum lease payments receivable	(649,500)	(533,200)
Deferred income	0	(55,600)
Net deferred tax liabilities before valuation allowance	(16,099,700)	(14,260,600)
Valuation allowance	0	(158,600)
Net deferred tax liabilities	(16,099,700)	(14,419,200)
Foreign tax credit carryover period	The foreign tax credit carryover will be available to offset federal tax expense in the first preceding tax year and in future years. The foreign tax credit carryover expires beginning in 2016 and extends through 2022
Unrecognized tax benefits	$ 0	$ 0