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Investment Securities (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Investments Debt And Equity Securities Abstract        
Gains realized on sales $ 0 $ 0 $ 0 $ 554
Losses realized on sales 0 0 0 0
Other-than-temporary impairment recognized 0 0 0 0
Investment securities gains $ 0 $ 0 $ 0 $ 554