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Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Significant Accounting Policies [Line Items]      
Advertising costs incurred $ 12,480 $ 10,935 $ 9,008
Research and development costs incurred 47,973 36,535 26,997
Periods of performance considered for calculating compensation expense 3 years    
Liquid instruments maturity days 90 days or less    
Cost percentage of inventory under LIFO method 21.00% 24.00%  
Consolidated inventories under FIFO method 6,797 6,810  
Interest charges capitalized $ 0 $ 0 $ 0
Standard product warranty period 1 year    
Stock Options [Member]
     
Significant Accounting Policies [Line Items]      
Options for common shares excluded from computation of diluted earning per share 0 75 71
Maximum [Member]
     
Significant Accounting Policies [Line Items]      
Ownership percentage in affiliates and joint ventures 50.00%