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Investment Securities (Narrative) (Details) (USD $)	6 Months Ended	12 Months Ended
Investment Securities (Narrative) (Details) (USD $)	Jun. 30, 2013 security	Dec. 31, 2012 security
Investment Securities [Abstract]
Securities with unrealized losses	26	6
Securities pledged	$ 40,600,000	$ 42,700,000
Percent of investment portfolio securities pledged	18.00%	20.00%
Concentration risk reporting threshold	10.00%	10.00%
Investment in Federal Home Loan Bank stock	$ 1,932,000	$ 1,967,000

Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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