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Note 6 - Restricted Cash and Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Oct. 31, 2011
Restricted Cash and Cash Equivalents $ 64,200 $ 77,600
Surety Bonds [Member]
   
Restricted Cash and Cash Equivalents 6,200 12,800
Customer Deposits [Member]
   
Restricted Cash and Cash Equivalents $ 27,300 $ 7,100