Securities (Company's Sales of Securities) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]      
Proceeds from sales of securities $ 25,695 $ 17,613 $ 115,493
Gross realized gains 451 785 2,826
Gross realized losses     (289)
OTTI     $ (39)