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Note 4 - Reduction of Inventory to Fair Value (Details Textual)
 3 Months Ended 9 Months Ended
Jul. 31, 2016
USD ($)
Jul. 31, 2015
USD ($)
Jul. 31, 2016
USD ($)
Jul. 31, 2015
USD ($)
Oct. 31, 2015
USD ($)
Homebuilding [Member] | Real Estate Inventory [Member] | Minimum [Member]          
Fair Value Inputs, Discount Rate     16.80% 17.50%  
Homebuilding [Member] | Real Estate Inventory [Member] | Maximum [Member]          
Fair Value Inputs, Discount Rate     18.50% 19.80%  
Homebuilding [Member] | Model Sale Leaseback Financing Arrangements [Member]          
Inventory Real Estate, Other Options $ 96,900,000   $ 96,900,000   $ 95,900,000
Liabilities from Inventory Real Estate Not Owned 87,300,000   87,300,000   87,900,000
Homebuilding [Member] | Land Banking Arrangement [Member]          
Inventory Real Estate, Other Options 183,800,000   183,800,000   25,100,000
Liabilities from Inventory Real Estate Not Owned 108,500,000   108,500,000   16,800,000
Homebuilding [Member]          
Liabilities from Inventory Real Estate Not Owned 195,755,000   195,755,000   105,856,000 [1]
Impairment of Real Estate 1,300,000 $ 0 16,400,000 $ 4,400,000  
Inventory Real Estate Specific Performance Options $ 0   $ 0   $ 1,200,000
Number of Communities Evaluated for Impairment     418 522  
Number of Communities Performed Detailed Impairment Calculations     22 17  
Carrying Value of Communities Tested for Impairment     $ 95,500,000 $ 86,700,000  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent     11 8  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent     $ 47,800,000 $ 42,700,000  
Percentage Undiscounted Cash Flow Exceeds Carrying Amount     20.00%    
Number of Communities Impaired 2   12 5  
PreImpairment Value $ 5,400,000   $ 50,800,000 $ 16,700,000  
Land Option Write Offs $ 200,000 $ 1,100,000 $ 6,500,000 $ 3,200,000  
Number of Walk Away Lots 1,570 1,035 5,089 3,190  
Number of Communities Mothballed 28   28   31
Inventory Real Estate Mothballed Communities $ 74,900,000   $ 74,900,000   $ 103,000,000
Inventory Real Estate Mothballed Communities Accumulated Impairment Charges $ 293,100,000   $ 293,100,000   334,500,000
Liabilities from Inventory Real Estate Specific Performance Options         $ 1,200,000
[1] Derived from the audited balance sheet as of October 31, 2015.