Acquisitions, Goodwill and Intangible Assets 2 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Oct. 31, 2011
Oct. 31, 2009
Goodwill Details [Abstract]    
Goodwill, beginning balance $ 135,786 $ 135,786
Goodwill acquired 6,516  
Goodwill, ending balance $ 142,302 $ 135,786