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Loans and Asset Quality Information (Schedule of Applied Cost Recovery Method of Purchased Impaired Loans) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Purchased impaired loans (substantially all of which are covered loans)    
Balance, beginning, carrying value $ 2,597 $ 3,142
Change due to payments received (532) (826)
Transfer to foreclosed real estate $ (95)  
Change due to loan charge-off   (31)
Other 312
Balance, ending, carrying value $ 1,970 2,597
Contractual Principal Receivable [Member]    
Purchased impaired loans (substantially all of which are covered loans)    
Balance, beginning, contractual principal 5,859 6,263
Change due to payments received (634) (599)
Transfer to foreclosed real estate (431)  
Change due to loan charge-off   (2)
Other (3) 197
Balance, ending, contractual principal 4,791 5,859
Fair Value Adjustment Write Down [Member]    
Purchased impaired loans (substantially all of which are covered loans)    
Balance, beginning, FMV 3,262 3,121
Change due to payments received (102) 227
Transfer to foreclosed real estate (336)  
Change due to loan charge-off   29
Other (3) (115)
Balance, ending, FMV $ 2,821 $ 3,262