Summary of Significant Accounting Policies - Additional Informations (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Separation And Basis Of Presentation [Line Items]
Junior Subordinated Notes	$ 27,070,000	$ 27,070,000
Investment in variable interest entity	820,000
Exposure related to the Junior Subordinated notes	26,250,000
Loans on non accrual status determinator	60 days
Guaranteed portion of program loans sold to investors	(1) a cash premium and the minimum 1% SBA required servicing spread, (2) future servicing spread greater than 1% and no cash premium or (3) future servicing spread greater than 1% and a 10% cash premium.
Percentage of minimum servicing spread required	1.00%
Rate of cash premium	10.00%
Advertising Expense	145,000	136,000	85,000
Income distributable to shareholders, minimum	90.00%
Weighted average life of the loan	5 years
Credit losses	$ 0
Minimum [Member]
Separation And Basis Of Presentation [Line Items]
Fair value of servicing asset and retained loan discount	11.70%	11.60%
Maximum [Member]
Separation And Basis Of Presentation [Line Items]
Fair value of servicing asset and retained loan discount	12.40%	12.10%

No credit losses are assumed on SBA 7(a) program loans as the SBA has guaranteed their repayment.

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Financing Receivable Recorded Investment Nonaccrual Status Period

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Investment in variable interest entity.

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Alternatives possible upon sale of the guaranteed portion of SBA 7(a) program loans.

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No definition available.

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For sales of SBA 7(a) program loans, represents the minimum required servicing spread per government regulations.

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Represents percentage cash premium received on secondary market loan sales recorded sold with this premium and the minimum servicing spread.

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Per IRS regulations, REITs are required to distribute a minimum of 90% of taxable income to shareholders.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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Weighted average life of financial assets and financial liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

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