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Minimum percentage of eligible compensation on a pre-tax basis for eligible employees to save.

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Number of awards granted to three employee on retirement.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options share vested percentage.

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Share based compensation arrangement by share based payment award number of employees.

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Share based compensation arrangement by share based payment award number of employee share issued.

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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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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage of employer's matching contributions to a defined contribution plan that vests in a given year.

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Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

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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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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Employee Benefit Plans (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 30, 2008
Employee Benefit Plans (Textual) [Abstract]
Vesting period	6 years
Restricted stock awards, shares issued	11,000	11,000	10,150
Employee Benefit Plans (Additional Textual) [Abstract]
Minimum percentage of eligible compensation on a pre-tax basis for eligible employees to save	1.00%
Percentage of total eligible compensation, contribution by Bank, maximum limit	4.00%
Employee contribution matching percentage	50.00%
Vesting percentage in participant's deferral contributions and employer matching contributions	100.00%
Employer matching contribution and the discretionary contribution	$ 744	$ 680	$ 551
One employee received shares from awards granted due to retirement		210	210	210
Three employees received shares from awards granted due to retirement			557	557	557
Restricted Stock [Member]
Employee Benefit Plans (Textual) [Abstract]
Vesting period	3 years
Restricted stock awards, shares issued	11,000	11,000	10,150
Stock issued to number of employees	54	56	53
Shares vest under the plan	100.00%	100.00%	100.00%
Shares forfeited due to employee termination	1,135	778	1,575
Number of shares vested	8,910	9,432	7,425
Number of employees, received the stock	41	44	40
Compensation expense	219	202	191
Unrecognized compensation expense related to the nonvested portion of restricted stock awards under the plan	$ 334