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Note 4 - Reduction of Inventory to Fair Value (Details Textual)
 3 Months Ended
Jan. 31, 2017
USD ($)
Jan. 31, 2016
USD ($)
Oct. 31, 2016
USD ($)
Number of Communities Evaluated for Impairment 390 512  
Number of Communities Performed Detailed Impairment Calculations 6 11  
Carrying Value of Communities Tested for Impairment $ 13,800,000 $ 46,200,000  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent 1 4  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent $ 1,200,000 $ 17,300,000  
Percentage Undiscounted Cash Flow Exceeds Carrying Amount 20.00%    
Impairment of Real Estate $ 2,700,000 $ 9,700,000  
Homebuilding [Member]      
Number of Communities Impaired 5 6  
Impairment of Real Estate $ 2,700,000 $ 9,700,000  
PreImpairment Value 12,600,000 28,700,000  
Land Option Write Offs $ 500,000 $ 2,000,000  
Number of Walk Away Lots 1,061 1,256  
Number of Previously Mothballed Communities Sold During the Period 1    
Number of Communities Mothballed 28 29  
Inventory Real Estate Mothballed Communities $ 69,300,000 $ 74,400,000  
Inventory Real Estate Mothballed Communities Accumulated Impairment Charges 268,000,000 $ 296,300,000  
Liabilities from Inventory Real Estate Not Owned $ 124,394,000   $ 150,179,000 [1]
Number of Communities Mothballed During the Period 0    
Number of Mothballed Communities Reactivated 0    
Inventory Real Estate Specific Performance Options $ 0   0
Homebuilding [Member] | Model Sale Leaseback Financing Arrangements [Member]      
Inventory Real Estate, Other Options 75,500,000   79,200,000
Liabilities from Inventory Real Estate Not Owned 66,300,000   69,700,000
Homebuilding [Member] | Land Banking Arrangement [Member]      
Inventory Real Estate, Other Options 96,100,000   129,500,000
Liabilities from Inventory Real Estate Not Owned $ 58,100,000   $ 80,500,000
Homebuilding [Member] | Real Estate Inventory [Member]      
Fair Value Inputs, Discount Rate   0.00%  
Number of Communities Impaired   6  
Homebuilding [Member] | Real Estate Inventory [Member] | Minimum [Member]      
Fair Value Inputs, Discount Rate 18.30%    
Homebuilding [Member] | Real Estate Inventory [Member] | Maximum [Member]      
Fair Value Inputs, Discount Rate 19.80%    
[1] Derived from the audited balance sheet as of October 31, 2016.