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Prepaid Expenses and Other
 9 Months Ended
Jul. 31, 2011
Prepaid Expenses and Other [Abstract]  
PREPAID EXPENSES AND OTHER
(9) PREPAID EXPENSES AND OTHER
     As of the dates indicated, prepaid expenses and other are comprised of the following (in thousands):
                 
    October 31,     July 31,  
    2010     2011  
Prepaid VAT and other taxes
  $ 46,352     $ 37,295  
Deferred deployment expense
    6,918       13,779  
Product demonstration equipment, net
    29,449       45,048  
Prepaid expenses
    15,087       13,537  
Restricted cash
    12,994       21,566  
Contingent consideration
    30,195       —  
Other non-trade receivables
    6,685       10,176  
 
           
 
  $ 147,680     $ 141,401  
 
           
     Depreciation of product demonstration equipment was $2.3 million and $7.1 million for the first nine months of fiscal 2010 and 2011, respectively.