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Note 14 - Commitments and Contingencies (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Nov. 30, 2010
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
May 04, 2012
Nov. 07, 2009
Operating Leases, Rent Expense   $ 3.7 $ 3.2 $ 2.6    
Legal Bond         0.1  
False Credit Meter Value           42.0
Loss Contingency, Damages Sought The Petition claimed damages of approximately $43.0 million plus possible treble damages, attorneys' fees and costs.          
Minimum Aggregate Severance Benefits [Member]
           
Supplemental Unemployment Benefits, Severance Benefits   $ 6.5 $ 6.6      
Minimum [Member]
           
Lease Terms   1 year        
Employment Agreements Term   1 year        
Maximum [Member]
           
Lease Terms   10 years        
Employment Agreements Term   4 years