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Note 4 - Reduction of Inventory to Fair Value (Details Textual)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2019
USD ($)
Apr. 30, 2018
USD ($)
Apr. 30, 2019
USD ($)
Apr. 30, 2018
USD ($)
Oct. 31, 2018
USD ($)
Number of Communities Evaluated for Impairment     398 377  
Number of Communities Performed Detailed Impairment Calculations     6 5  
Carrying Value of Communities Tested for Impairment     $ 51,600 $ 11,200  
Impairment of Real Estate $ 1,000 $ 2,100 1,000 2,100  
Homebuilding [Member]          
Impairment of Real Estate $ 1,000 $ 2,100 $ 1,000 $ 2,100  
Number of Communities Impaired 2 5 3 5  
PreImpairment Value $ 3,900 $ 11,200 $ 10,200 $ 11,200  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent     3 0  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent     $ 41,300    
Percentage Undiscounted Cash Flow Exceeds Carrying Amount     20.00% 20.00%  
Land Option Write Offs $ 500 $ 600 $ 1,200 $ 1,000  
Number of Walk Away Lots 680 714 2,170 1,341  
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 14   14   18
Inventory Real Estate Mothballed Communities $ 14,200   $ 14,200   $ 24,500
Inventory Real Estate Mothballed Communities Accumulated Impairment Charges 146,900   146,900   186,100
Liabilities from Inventory Real Estate Not Owned 123,348   123,348   63,387
Homebuilding [Member] | Model Sale Leaseback Financing Arrangements [Member]          
Inventory Real Estate, Other Options 58,400   58,400   50,500
Liabilities from Inventory Real Estate Not Owned 52,100   52,100   43,900
Homebuilding [Member] | Land Banking Arrangement [Member]          
Inventory Real Estate, Other Options 96,000   96,000   37,400
Liabilities from Inventory Real Estate Not Owned $ 71,200   $ 71,200   $ 19,500
Minimum [Member] | Homebuilding [Member] | Measurement Input, Discount Rate [Member]          
Inventory, Measurement Input     18 16.8  
Maximum [Member] | Homebuilding [Member] | Measurement Input, Discount Rate [Member]          
Inventory, Measurement Input     18.3 19.8