Fair Value Of Financial Instruments (Reconciliation Of Fair Valued Assets Measured On A Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Collateralized debt obligations [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance $ 11,442 $ 9,447
Included in other comprehensive income 2,356 507
Ending Balance 13,798 9,954
The amount of total gains or losses for the period included in earnings attributable to the change in realized/unrealized gains or losses related to assets still held at the reporting date 0 0
Interest Rate Swap [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance (849) (1,034)
Included in other comprehensive income 101 46
Ending Balance (748) (988)
The amount of total gains or losses for the period included in earnings attributable to the change in realized/unrealized gains or losses related to assets still held at the reporting date $ 0 $ 0