Share Based Compensation Plan (Details) (USD $)	12 Months Ended
Dec. 31, 2012
Summary of option activity under Company's Plan
Shares Outstanding, beginning of year	303,974
Shares Granted
Shares Forfeited	1,500
Shares Expired	3,125
Shares Outstanding, end of year	299,349
Shares Exercisable, end of year	211,149
Weighted - Average Exercise Price, Outstanding, beginning of year	$ 9.85
Weighted - Average Exercise Price, Granted
Weighted - Average Exercise Price, Forfeited	$ 6.98
Weighted - Average Exercise Price, Expired	$ 13.30
Weighted - Average Exercise Price, Outstanding, end of year	$ 9.86
Weighted - Average Exercise Price, Exercisable, end of year	$ 11.07
Weighted - Average Remaining Contractual Term, Outstanding, end of year	4 years 9 months 22 days
Weighted - Average Remaining Contractual Term, Exercisable, end of year	3 years 10 months 6 days
Aggregate Intrinsic Value, Outstanding, end of year
Aggregate Intrinsic Value, Exercisable, end of year

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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