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Note 4 - Reduction of Inventory to Fair Value (Details Textual)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Oct. 31, 2019
USD ($)
Number of Communities Evaluated for Impairment     354 398  
Number of Communities Performed Detailed Impairment Calculations     1 7  
Carrying Value of Communities Tested for Impairment     $ 600 $ 52,800  
Impairment of Real Estate $ 0 $ 100 $ 0 1,100  
Homebuilding [Member]          
Impairment of Real Estate   $ 100   $ 1,100  
Number of Communities Impaired   1   4  
PreImpairment Value   $ 1,200   $ 11,400  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow that Did Not Exceed Carrying Amount By Less Than 20 Percent     1    
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Did Not Exceed Carrying Amount by Less than 20 Percent     $ 600    
Percentage Undiscounted Cash Flow Exceeds Carrying Amount     20.00% 20.00%  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent       3  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent       $ 41,300  
Land Option Write Offs $ 2,400 $ 1,300 $ 6,200 $ 2,500  
Number of Walk Away Lots 1,131 1,852 3,495 4,022  
Number of Communities Mothballed During the Period     0    
Number of Mothballed Communities Reactivated     1    
Number of Mothballed Communities Partially Reactivated     1    
Number of Communities Mothballed 12   12   13
Inventory Real Estate Mothballed Communities $ 13,100   $ 13,100   $ 13,800
Inventory Real Estate Mothballed Communities Accumulated Impairment Charges 120,400   120,400   138,100
Liabilities from Inventory Real Estate Not Owned 144,922   144,922   141,033
Homebuilding [Member] | Model Sale Leaseback Financing Arrangements [Member]          
Inventory Real Estate, Other Options 54,900   54,900   54,200
Liabilities from Inventory Real Estate Not Owned 53,000   53,000   51,200
Homebuilding [Member] | Land Banking Arrangement [Member]          
Inventory Real Estate, Other Options 139,900   139,900   136,100
Liabilities from Inventory Real Estate Not Owned $ 91,900   $ 91,900   $ 89,800
Minimum [Member] | Homebuilding [Member] | Measurement Input, Discount Rate [Member]          
Inventory, Measurement Input       18.0  
Maximum [Member] | Homebuilding [Member] | Measurement Input, Discount Rate [Member]          
Inventory, Measurement Input       18.3