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Note 4 - Reduction of Inventory to Fair Value (Details Textual)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2017
USD ($)
Apr. 30, 2016
USD ($)
Apr. 30, 2017
USD ($)
Apr. 30, 2016
USD ($)
Oct. 31, 2016
USD ($)
Number of Communities Evaluated for Impairment     381 478  
Number of Communities Performed Detailed Impairment Calculations     9 20  
Carrying Value of Communities Tested for Impairment     $ 66,900 $ 89,000  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent     3 9  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent     $ 45,800 $ 43,500  
Percentage Undiscounted Cash Flow Exceeds Carrying Amount     20.00%    
Impairment of Real Estate $ 1,500 $ 5,400 $ 4,200 $ 15,100  
Number of Communities Impaired 1 4 6 10  
PreImpairment Value $ 8,500 $ 16,700 $ 21,100 $ 45,400  
Homebuilding [Member]          
Land Option Write Offs $ 400 $ 4,300 $ 900 $ 6,300  
Number of Walk Away Lots 478 2,263 1,539 3,519  
Number of Communities Mothballed During the Period     0    
Number of Previously Mothballed Communities Sold During the Period     2    
Number of Mothballed Communities Reactivated     2    
Number of Communities Mothballed 25   25   29
Inventory Real Estate Mothballed Communities $ 66,000   $ 66,000   $ 74,400
Inventory Real Estate Mothballed Communities Accumulated Impairment Charges 239,900   239,900   296,300
Inventory Real Estate Specific Performance Options 0   0   0
Liabilities from Inventory Real Estate Not Owned 116,728   116,728   150,179 [1]
Homebuilding [Member] | Model Sale Leaseback Financing Arrangements [Member]          
Inventory Real Estate, Other Options 76,500   76,500   79,200
Liabilities from Inventory Real Estate Not Owned 68,100   68,100   69,700
Homebuilding [Member] | Land Banking Arrangement [Member]          
Inventory Real Estate, Other Options 78,100   78,100   129,500
Liabilities from Inventory Real Estate Not Owned $ 48,600   $ 48,600   $ 80,500
Homebuilding [Member] | Real Estate Inventory [Member] | Minimum [Member]          
Fair Value Inputs, Discount Rate     18.30% 16.80%  
Homebuilding [Member] | Real Estate Inventory [Member] | Maximum [Member]          
Fair Value Inputs, Discount Rate     19.80% 18.50%  
[1] Derived from the audited balance sheet as of October 31, 2016. See notes to condensed consolidated financial statements (unaudited).