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Borrowings (Summary Of Outstanding Short-Term Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Short-term Debt [Line Items]    
Total short-term borrowings $ 334,804us-gaap_ShortTermBorrowings $ 337,042us-gaap_ShortTermBorrowings
Repurchase Agreements [Member]    
Short-term Debt [Line Items]    
Total short-term borrowings 39,504us-gaap_ShortTermBorrowings
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_RepurchaseAgreementsMember
39,042us-gaap_ShortTermBorrowings
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_RepurchaseAgreementsMember
Federal Home Loan Bank Advances [Member]    
Short-term Debt [Line Items]    
Total short-term borrowings $ 295,300us-gaap_ShortTermBorrowings
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_FederalHomeLoanBankAdvancesMember
$ 298,000us-gaap_ShortTermBorrowings
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_FederalHomeLoanBankAdvancesMember