Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Fair Value Measurements (Textual) [Abstract]
Non recurring fair value adjustments on loans held for sale	$ 0	$ 0
Period under consideration for valuation of real estate collateral	1 year
Period under consideration for valuation of house or building in the process of construction	1 year
Period under consideration for valuation of business equipment	1 year
Period of maturity as classifies as short term borrowing	90 days
Fair value of loan commitments and standby letters of credit	$ 0		$ 0

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Fair value of loan commitments and standby letters of credit.

No definition available.

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Maximum period used to determine value of business equipment.

No definition available.

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Maximum period used to determine value of real estate collateral.

No definition available.

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Minimum period of appraisal of property to consider different method to measure fair value.

No definition available.

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Non recurring fair value adjustments on loans held for sale.

No definition available.

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Period of maturity as classifies as short term borrowing.

No definition available.

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