Change in Accounting Principle (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2013	Dec. 31, 2012
Balance Sheets [Abstract]
Cash and cash equivalents	$ 1,840,500	$ 2,112,700
Accounts receivable, net	2,128,600	3,303,800
Finance leases receivable	0	1,895,200
Aircraft and aircraft engines held for lease, net	186,762,600	152,954,600
Assets held for sale	6,522,900	735,000
Prepaid expenses and other	4,520,300	3,633,000
Total assets	201,774,900	164,634,300
Accounts payable and accrued expenses	2,818,200	1,202,700
Notes payable and accrued interest	133,590,600	77,527,300
Security deposits	5,218,300	6,265,000
Unearned revenues	1,642,200	646,700
Deferred income taxes	8,621,300	14,573,800
Total liabilities	166,934,000	118,499,400
Preferred stock	0	0
Common stock	1,600	1,600
Paid-in capital	14,780,100	14,780,100
Retained earnings	20,563,300	31,857,300
Treasury stock	(504,100)	(504,100)
Total stockholders' equity	34,840,900	46,134,900		37,791,000
Total liabilities and stockholders' equity	201,774,900	164,634,300
Statement of Operations [Abstract]
Operating lease revenue, net	21,913,300	18,794,200
Maintenance reserves income, net	3,393,600	14,910,400
Total Income	28,706,500	38,231,600
Maintenance	7,478,400	6,962,400
Depreciation	7,299,000	7,363,100
Management fees	3,864,900	4,369,300
Interest	5,134,200	4,075,000
Professional fees, general and administrative and other	1,718,800	1,174,500
Insurance	1,255,300	1,166,400
Other taxes	465,200	90,200
Total expenses	45,952,300	25,558,500
Income before taxes	(17,245,800)	12,673,100
Tax provision	(5,951,800)	4,329,200
Net (loss)/income	(11,294,000)	8,343,900
Earnings per share:
Basic (in dollars per share)	$ (7.32)	$ 5.41
Diluted (in dollars per share)	$ (7.32)	$ 5.26
Operating activities:
Net (loss)/income	(11,294,000)	8,343,900
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain on disposal of assets	3,147,200	3,808,200
Depreciation	7,299,000	7,363,100
Non-cash interest	950,100	1,113,600
Deferred income taxes	(5,952,600)	4,321,300
Changes in operating assets and liabilities:
Accounts receivable	(498,000)	(96,100)
Finance lease receivable	1,895,200	246,000
Income taxes receivable	0	2,000
Prepaid expenses and other	486,700	(772,400)
Accounts payable and accrued expenses	(132,400)	(23,400)
Accrued interest on notes payable	163,300	(38,400)
Maintenance reserves and accrued costs	(1,313,700)	(9,128,800)
Security deposits	(2,167,700)	(525,200)
Unearned revenue	210,200	(105,700)
Income taxes payable	0	(19,100)
Net cash provided by operating activities	5,235,400	6,872,600
Investing activities:
Proceeds from sale of aircraft and aircraft engines held for lease, net of re-sale fees	15,854,800	10,018,700
Proceeds from sale of assets held for sale, net of re-sale fees	312,100	945,100
Purchases of aircraft and aircraft engines	(74,529,000)	(24,965,500)
Net cash used in investing activities	(58,362,100)	(14,001,700)
Financing activities:
Borrowings under Credit Facility	71,100,000	19,000,000
Repayments of Credit Facility	(15,200,000)	(9,300,000)
Debt issuance costs	(3,045,500)	(2,055,000)
Net cash provided by financing activities	52,854,500	7,645,000
Net (decrease)/increase in cash and cash equivalents	(272,200)	515,900
Cash and cash equivalents, beginning of year	2,112,700	1,596,800
Cash and cash equivalents, end of year	1,840,500	2,112,700
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		18,794,200
Maintenance reserves income, net		8,878,300
Gain on disposal of assets and other income		4,527,000
Total Income		32,199,500
Maintenance		8,765,000
Depreciation		7,312,500
Management fees		4,352,400
Interest		4,075,000
Professional fees, general and administrative and other		1,532,100
Insurance		1,166,400
Other taxes		90,200
Total expenses		27,293,600
Income before taxes		4,905,900
Tax provision		1,688,400
Net (loss)/income		3,217,500
Earnings per share:
Basic (in dollars per share)		$ 2.08
Diluted (in dollars per share)		$ 2.03
Operating activities:
Net (loss)/income		3,217,500
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain on disposal of assets		(3,808,200)
Depreciation		7,312,500
Non-cash interest		1,113,600
Deferred income taxes		1,680,500
Changes in operating assets and liabilities:
Accounts receivable		(106,000)
Finance lease receivable		246,000
Income taxes receivable		2,000
Prepaid expenses and other		(772,400)
Accounts payable and accrued expenses		(40,300)
Accrued interest on notes payable		(38,400)
Maintenance reserves and accrued costs		(1,284,200)
Security deposits		(525,200)
Unearned revenue		(105,700)
Income taxes payable		(19,100)
Net cash provided by operating activities		6,872,600
Investing activities:
Proceeds from sale of aircraft and aircraft engines held for lease, net of re-sale fees		10,018,700
Proceeds from sale of assets held for sale, net of re-sale fees		945,100
Purchases of aircraft and aircraft engines		(24,965,500)
Net cash used in investing activities		(14,001,700)
Financing activities:
Borrowings under Credit Facility		19,000,000
Repayments of Credit Facility		(9,300,000)
Debt issuance costs		(2,055,000)
Net cash provided by financing activities		7,645,000
Net (decrease)/increase in cash and cash equivalents		515,900
Cash and cash equivalents, beginning of year		1,596,800
Cash and cash equivalents, end of year		2,112,700
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		18,794,200
Maintenance reserves income, net		14,910,400
Gain on disposal of assets and other income		4,527,000
Total Income		38,231,600
Maintenance		6,962,400
Depreciation		7,363,100
Management fees		4,369,300
Interest		4,075,000
Professional fees, general and administrative and other		1,532,100
Insurance		1,166,400
Other taxes		90,200
Total expenses		25,558,500
Income before taxes		12,673,100
Tax provision		4,329,200
Net (loss)/income		8,343,900
Earnings per share:
Basic (in dollars per share)		$ 5.41
Diluted (in dollars per share)		$ 5.26
Operating activities:
Net (loss)/income		8,343,900
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain on disposal of assets		(3,808,200)
Depreciation		7,363,100
Non-cash interest		1,113,600
Deferred income taxes		4,321,300
Changes in operating assets and liabilities:
Accounts receivable		(96,100)
Finance lease receivable		246,000
Income taxes receivable		2,000
Prepaid expenses and other		(772,400)
Accounts payable and accrued expenses		(23,400)
Accrued interest on notes payable		(38,400)
Maintenance reserves and accrued costs		(9,128,800)
Security deposits		(525,200)
Unearned revenue		(105,700)
Income taxes payable		(19,100)
Net cash provided by operating activities		6,872,600
Investing activities:
Proceeds from sale of aircraft and aircraft engines held for lease, net of re-sale fees		10,018,700
Proceeds from sale of assets held for sale, net of re-sale fees		945,100
Purchases of aircraft and aircraft engines		(24,965,500)
Net cash used in investing activities		(14,001,700)
Financing activities:
Borrowings under Credit Facility		19,000,000
Repayments of Credit Facility		(9,300,000)
Debt issuance costs		(2,055,000)
Net cash provided by financing activities		7,645,000
Net (decrease)/increase in cash and cash equivalents		515,900
Cash and cash equivalents, beginning of year		1,596,800
Cash and cash equivalents, end of year		2,112,700
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		6,032,100
Gain on disposal of assets and other income		0
Total Income		6,032,100
Maintenance		(1,802,600)
Depreciation		50,600
Management fees		16,900
Interest		0
Professional fees, general and administrative and other		0
Insurance		0
Other taxes		0
Total expenses		(1,735,100)
Income before taxes		7,767,200
Tax provision		2,640,800
Net (loss)/income		5,126,400
Earnings per share:
Basic (in dollars per share)		$ 3.33
Diluted (in dollars per share)		$ 3.23
Operating activities:
Net (loss)/income		5,126,400
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain on disposal of assets		0
Depreciation		50,600
Non-cash interest		0
Deferred income taxes		2,640,800
Changes in operating assets and liabilities:
Accounts receivable		9,900
Finance lease receivable		0
Income taxes receivable		0
Prepaid expenses and other		0
Accounts payable and accrued expenses		16,900
Accrued interest on notes payable		0
Maintenance reserves and accrued costs		(7,844,600)
Security deposits		0
Unearned revenue		0
Income taxes payable		0
Net cash provided by operating activities		0
Investing activities:
Proceeds from sale of aircraft and aircraft engines held for lease, net of re-sale fees		0
Proceeds from sale of assets held for sale, net of re-sale fees		0
Purchases of aircraft and aircraft engines		0
Net cash used in investing activities		0
Financing activities:
Borrowings under Credit Facility		0
Repayments of Credit Facility		0
Debt issuance costs		0
Net cash provided by financing activities		0
Net (decrease)/increase in cash and cash equivalents		0
Cash and cash equivalents, beginning of year		0
Cash and cash equivalents, end of year		$ 0