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Securities (Gross Realized Gains and Losses on Sales of Securities Available-for-Sale) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Securities [Abstract]        
Gross realized gains $ 63 $ 301 $ 508 $ 918
Gross realized losses 0 0 0 (14)
Net realized gain 63 301 508 904
Proceeds from sale of securities $ 5,466 $ 7,252 $ 28,850 $ 39,117