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Note 17 - Warranty Costs (Detail) (USD $)
 3 Months Ended 12 Months Ended
Jul. 31, 2012
Oct. 31, 2012
Oct. 31, 2011
Per Occurence Threshold to Accrue Warranty Costs to Cost of Sales   $ 5,000  
Per Occurence Threshold to Accrue Warranty Costs to S, G and A   5,000  
General Liability Insurance Deductible   20,000,000  
Bodily Injury Insurance Deductible   100,000  
Bodily Injury Insurance Limit   5,000,000  
Aggregate Retention for Construction Defects, Warranty and Bodily Injury Claims   21,000,000  
Payments by Insurance Companies for Claims   $ 18,100,000 $ 9,800,000
Number of Claims Settled 2    
Northeast [Member]
      
Number of Claims Settled 1    
West [Member]
      
Number of Claims Settled 1