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Securities (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Bond
Sep. 30, 2013
Bond
Dec. 31, 2012
Securities (Textual)      
Fair value of securities pledged as collateral, to secure public deposits and for other purposes $ 67,200,000 $ 67,200,000 $ 49,800,000
Fair value of securities delivered for repurchase agreements 16,600,000 16,600,000 16,200,000
Available-for-sale Securities, Gross Realized Gains 30,000 50,000  
Gain on sale reclassification from accumulated other comprehensive income included in gain on sale of securities   50,000  
Tax expense for net security gains   20,000  
Total fair value $ 25,931,000 $ 25,931,000 $ 6,024,000
Fair value as a percentage of available-for-sale investment portfolio 29.90% 29.90% 6.10%
Number of bonds in portfolio 29 29  
Percentage of investment portfolio have an unrealized loss 25.00% 25.00%