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Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Sep. 30, 2011
Financial assets:    
Financial assets, fair value $ 92,850 $ 41,528
Level 1 [Member]
   
Financial assets:    
Cash equivalents-Level 1 92,850 [1] 36,018 [1]
Level 2 [Member]
   
Financial assets:    
Forward contracts-Level 2 0 5,510
Forward contracts-Level 2 $ (1,030) $ 0
[1] Money market funds and time deposits.