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Fair Value Of Financial Instruments (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
security
Dec. 31, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized Cost $ 218,021 $ 368,319
Available-for-sale Securities 205,258 336,589
Collateralized Debt Obligations [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Acquired Trust Preferred Securities, Number of Securities 18  
Amortized Cost 37,389 37,146
Available-for-sale Securities $ 23,921 $ 17,538