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Derivative Instruments and Hedging Activities (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Foreign currency forwards
   
Derivative instruments and hedging activities    
Gains (losses) recognized in OCI $ (457) $ (4,949)
Gains (losses) reclassified into earnings - Effective Portion (2,072) (3,165)
Forward starting swap
   
Derivative instruments and hedging activities    
Gains (losses) recognized in OCI $ (473)