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Stock-Based Benefit Plans (Details 4) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Dec. 14, 2012
Oct. 31, 2012
Dec. 20, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock based expense recognized $ 4,422 $ 3,367 $ 14,449 $ 12,227      
Non-Performance Based Restricted Stock Units [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock units issued     94,080 106,970      
Closing Price of Company Common Stock at Issuance Date         $ 32.22   $ 20.50
Fair value of restricted stock units issued     3,031 2,193      
Stock based expense recognized 464 308 2,048 933      
Summary of aggregate number and unamortized value of outstanding stock price based RSUs              
Aggregate outstanding RSUs 227,658   227,658     137,764  
Unamortized value of RSUs $ 2,212   $ 2,212     $ 1,326