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Short-Term Borrowings (Short-Term Federal Home Loan Bank Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Short-term Debt [Line Items]    
Amount outstanding at end of year $ 312,945 $ 224,077
Federal Home Loan Bank Advances [Member]
   
Short-term Debt [Line Items]    
Average daily balance during the year 238,234 182,134
Maximum month-end balance during the year 292,690 206,535
Amount outstanding at end of year $ 292,690 $ 203,441