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Derivative Financial Instruments ( Statement Of Operations Information) (Details) (Not Designated as Hedging Instruments [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Derivative [Line Items]        
Derivative financial instruments, net gain (loss) recognized $ 472 $ 138 $ 2,127 $ 357
Foreign currency forward contracts [Member]
        
Derivative [Line Items]        
Derivative financial instruments, net gain (loss) recognized (119) (288) (481) (323)
TBAs [Member]
        
Derivative [Line Items]        
Derivative financial instruments, net gain (loss) recognized $ 591 $ 426 $ 2,608 $ 680