Summary of Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended
Mar. 31, 2013 Offices Contract Segment Branches RealEstate	Mar. 31, 2012	Mar. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]
Real estate development and construction maximum family residential units	4
Real estate development and construction minimum family residential units	1
Number of real estate joint ventures currently involved	9
Number of full service banking branches	23
Number of loan production offices	1
Number of operating segment	1
Notional amount of interest rate cap derivatives	$ 170,000,000
Interest rate cap contracts outstanding	16
Number of interest rate swap contracts	2
Interest payment in junior subordinated notes	35,000,000
Minimum cumulative percentage change in anticipated cash flows	80.00%
Maximum cumulative percentage change in anticipated cash flows	125.00%
Stock-based compensation expense		107,000	100,000
Amounts charged to current earnings	0
Tax benefit from compensation expense		9,000	6,500
Unrecognized compensation cost		$ 790,000
Share based compensation expense recognized, years		4 years
AMSCO Inc [Member]
Summary of Significant Accounting Policies [Line Items]
Ownership percentage	51.00%

Amounts charged to current earnings.

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Maximum cumulative percentage change in anticipated cash flows.

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Minimum cumulative percentage change in anticipated cash flows.

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Number of interest rate swap contracts.

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Number of loan production offices.

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Number of real estate joint ventures currently involved.

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Number of service bank branches.

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Real estate development and construction maximum family residential units.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Aggregate unrecognized cost of share-based awards, other than options, made to employees under an equity-based compensation plan, that have yet to vest.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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-Name Staff Accounting Bulletin (SAB)

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