Adjustment of Previously Reported Financial Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Balance Sheets [Abstract]
Cash and cash equivalents	$ 4,929,200	$ 2,403,300	$ 2,112,700	$ 1,596,800
Accounts receivable, net	2,501,100		3,303,800
Finance leases receivable	1,867,300		1,895,200
Aircraft and aircraft engines held for lease, net	179,709,800		152,954,600
Assets held for sale	519,800		735,000
Prepaid expenses and other	3,553,800		3,633,000
Total assets	193,081,000		164,634,300
Accounts payable and accrued expenses	1,043,900		1,202,700
Notes payable and accrued interest	104,980,800		77,527,300
Security deposits	7,379,200		6,265,000
Unearned revenues	1,950,000		646,700
Deferred income taxes	14,727,600		14,573,800
Income taxes payable	800		0
Total liabilities	146,576,400		118,499,400
Preferred stock	0		0
Common stock	1,600		1,600
Paid-in capital	14,780,100		14,780,100
Retained earnings	32,227,000		31,857,300
Treasury stock	(504,100)		(504,100)
Total stockholders' equity	46,504,600		46,134,900
Total liabilities and stockholders' equity	193,081,000		164,634,300
Statement of Operations [Abstract]
Operating lease revenue, net	5,850,800	4,900,200
Maintenance reserves income, net	1,675,800	6,528,500
Gain on disposal of assets	391,900	218,200
Other income	84,400	550,000
Total Income	8,002,900	12,196,900
Maintenance	2,344,300	2,139,500
Depreciation	1,865,800	1,757,200
Management fees	1,327,300	1,095,900
Interest	1,307,000	1,065,600
Professional fees, general and administrative and other	304,500	327,000
Insurance	307,200	253,700
Other taxes	22,600	22,600
Total expenses	7,478,700	6,661,500
Income before taxes	524,200	5,535,400
Tax provision	154,500	1,717,500
Net income	369,700	3,817,900
Earnings per share:
Basic (in dollars per share)	$ 0.24	$ 2.47
Diluted (in dollars per share)	$ 0.23	$ 2.41
Cumulative net decrease of in stockholders' equity				8,088,200
As Reported Previously [Member]
Balance Sheets [Abstract]
Cash and cash equivalents			2,112,700
Accounts receivable, net			3,313,700
Finance leases receivable			1,895,200
Aircraft and aircraft engines held for lease, net			152,375,200
Assets held for sale			735,000
Prepaid expenses and other			3,633,000
Total assets			164,064,800
Accounts payable and accrued expenses			1,175,300
Notes payable and accrued interest			77,527,300
Maintenance reserves and accrued maintenance costs			13,254,100
Security deposits			6,265,000
Unearned revenues			646,700
Deferred income taxes			16,099,700
Total liabilities			114,968,100
Preferred stock			0
Common stock			1,600
Paid-in capital			14,780,100
Retained earnings			34,819,100
Treasury stock			(504,100)
Total stockholders' equity			49,096,700
Total liabilities and stockholders' equity			164,064,800
Statement of Operations [Abstract]
Operating lease revenue, net		4,900,200
Maintenance reserves income, net		7,134,300
Gain on disposal of assets		218,200
Other income		550,000
Total Income		12,802,700
Maintenance		2,405,200
Depreciation		1,746,000
Management fees		1,092,100
Interest		1,065,600
Professional fees, general and administrative and other		327,000
Insurance		253,700
Other taxes		22,600
Total expenses		6,912,200
Income before taxes		5,890,500
Tax provision		1,838,200
Net income		4,052,300
Earnings per share:
Basic (in dollars per share)		$ 2.63
Diluted (in dollars per share)		$ 2.56
As Adjusted [Member]
Balance Sheets [Abstract]
Cash and cash equivalents			2,112,700
Accounts receivable, net			3,303,800
Finance leases receivable			1,895,200
Aircraft and aircraft engines held for lease, net			152,954,600
Assets held for sale			735,000
Prepaid expenses and other			3,633,000
Total assets			164,634,300
Accounts payable and accrued expenses			1,202,700
Notes payable and accrued interest			77,527,300
Maintenance reserves and accrued maintenance costs			18,283,900
Security deposits			6,265,000
Unearned revenues			646,700
Deferred income taxes			14,573,800
Total liabilities			118,499,400
Preferred stock			0
Common stock			1,600
Paid-in capital			14,780,100
Retained earnings			31,857,300
Treasury stock			(504,100)
Total stockholders' equity			46,134,900
Total liabilities and stockholders' equity			164,634,300
Statement of Operations [Abstract]
Operating lease revenue, net		4,900,200
Maintenance reserves income, net		6,528,500
Gain on disposal of assets		218,200
Other income		550,000
Total Income		12,196,900
Maintenance		2,139,500
Depreciation		1,757,200
Management fees		1,095,900
Interest		1,065,600
Professional fees, general and administrative and other		327,000
Insurance		253,700
Other taxes		22,600
Total expenses		6,661,500
Income before taxes		5,535,400
Tax provision		1,717,500
Net income		3,817,900
Earnings per share:
Basic (in dollars per share)		$ 2.47
Diluted (in dollars per share)		$ 2.41
Effect of Change [Member]
Balance Sheets [Abstract]
Cash and cash equivalents			0
Accounts receivable, net			(9,900)
Finance leases receivable			0
Aircraft and aircraft engines held for lease, net			579,400
Assets held for sale			0
Prepaid expenses and other			0
Total assets			569,500
Accounts payable and accrued expenses			27,400
Notes payable and accrued interest			0
Maintenance reserves and accrued maintenance costs			5,029,800
Security deposits			0
Unearned revenues			0
Deferred income taxes			(1,525,900)
Total liabilities			3,531,300
Preferred stock			0
Common stock			0
Paid-in capital			0
Retained earnings			(2,961,800)
Treasury stock			0
Total stockholders' equity			(2,961,800)
Total liabilities and stockholders' equity			569,500
Statement of Operations [Abstract]
Operating lease revenue, net		0
Maintenance reserves income, net		(605,800)
Gain on disposal of assets		0
Other income		0
Total Income		(605,800)
Maintenance		(265,700)
Depreciation		11,200
Management fees		3,800
Interest		0
Professional fees, general and administrative and other		0
Insurance		0
Other taxes		0
Total expenses		(250,700)
Income before taxes		(355,100)
Tax provision		(120,700)
Net income		$ (234,400)
Earnings per share:
Basic (in dollars per share)		$ (0.16)
Diluted (in dollars per share)		$ (0.15)