v2.4.0.6
Fair Value Measurements (Reconciliation For All Assets And Liabilities Of The Company Measured At Fair Value On A Recurring Basis Using Significant Unobservable Inputs (Level 3)) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance, January 1 $ 52,623 $ 100,645
Purchases 0 0
Issuances 0 0
Principal prepayments and settlements (7,176) (10,806)
Sales 0 (34,706)
Total gains or (losses) (realized/unrealized), Included in earnings 3,941 4,920
Total gains or (losses) (realized/unrealized), Included in other comprehensive income 0 0
Transfers in and out of Level 3 0 0
Ending balance $ 49,388 $ 60,053