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Investment Securities Securities Gains and Losses (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Investments, Debt and Equity Securities [Abstract]        
Proceeds from sales of securities $ 0 $ 5,598 $ 0 $ 10,563
Gross realized gains 4 788 40 1,087
Gross realized losses 0 0 0 0
Net gain 4 788 40 1,087
Related income taxes $ 1 $ 275 $ 14 $ 380