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Investment Securities (Information Concerning Investments with Unrealized Losses) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Information concerning investments with unrealized losses    
Less than 12 months, Fair Value $ 20,382 $ 66,553
Less than 12 months, Unrealized Losses (142) (2,185)
12 months or longer, Fair Value 39,978 4,564
12 months or longer, Unrealized Losses (1,018) (108)
Total, Fair Value 60,360 71,117
Total, Unrealized Losses (1,160) (2,293)
U.S. Agency [Member]
    
Information concerning investments with unrealized losses    
Less than 12 months, Fair Value 50 3,812
Less than 12 months, Unrealized Losses (1) (64)
12 months or longer, Fair Value 3,843 938
12 months or longer, Unrealized Losses (57) (62)
Total, Fair Value 3,893 4,750
Total, Unrealized Losses (58) (126)
U.S. Agency mortgage-backed securities [Member]
    
Information concerning investments with unrealized losses    
Less than 12 months, Fair Value 16,415 52,163
Less than 12 months, Unrealized Losses (68) (1,701)
12 months or longer, Fair Value 26,320 669
12 months or longer, Unrealized Losses (767) (3)
Total, Fair Value 42,735 52,832
Total, Unrealized Losses (835) (1,704)
Taxable Municipal [Member]
    
Information concerning investments with unrealized losses    
Less than 12 months, Fair Value 984 891
Less than 12 months, Unrealized Losses (11) (120)
12 months or longer, Fair Value 968   
12 months or longer, Unrealized Losses (43)   
Total, Fair Value 1,952 891
Total, Unrealized Losses (54) (120)
Corporate bonds and other securities [Member]
    
Information concerning investments with unrealized losses    
Less than 12 months, Fair Value 2,933 9,687
Less than 12 months, Unrealized Losses (62) (300)
12 months or longer, Fair Value 8,847 2,957
12 months or longer, Unrealized Losses (151) (43)
Total, Fair Value 11,780 12,644
Total, Unrealized Losses $ (213) $ (343)