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Note 16 - Income Taxes (Details Textual)
$ in Thousands
 3 Months Ended 12 Months Ended 36 Months Ended
Jan. 31, 2021
USD ($)
Oct. 31, 2020
Jul. 31, 2020
Jan. 31, 2020
USD ($)
Jan. 31, 2021
USD ($)
Oct. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2020
USD ($)
Income Tax Expense (Benefit), Total $ 626     $ 1,712          
Deferred Tax Assets, Valuation Allowance, Total 571,500       $ 571,500        
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total $ 19,585     (7,436)   $ 55,400 $ (39,700) $ 8,100 $ 23,800
Contract Pace Per Average Active Selling Community 16.0 16.4 17.8            
Increase (Decrease) in Dollar Value of Backlog, Percentage         85.20%        
State and Local Jurisdiction [Member]                  
Income Tax Expense (Benefit), Total $ 626     1,712          
Operating Loss Carryforwards, Total 2,400,000       $ 2,400,000        
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member]                  
Operating Loss Carryforwards, Total 48,800       48,800        
State and Local Jurisdiction [Member] | Between 2021 and 2025 [Member]                  
Operating Loss Carryforwards, Total 232,600       232,600        
State and Local Jurisdiction [Member] | Between 2026 and 2030 [Member]                  
Operating Loss Carryforwards, Total 1,300,000       1,300,000        
State and Local Jurisdiction [Member] | Between 2031 and 2035 [Member]                  
Operating Loss Carryforwards, Total 587,900       587,900        
State and Local Jurisdiction [Member] | Between 2036 and 2040 [Member]                  
Operating Loss Carryforwards, Total 239,200       239,200        
Domestic Tax Authority [Member]                  
Income Tax Expense (Benefit), Total 0     $ 0          
Domestic Tax Authority [Member] | Between 2028 and 2038 [Member]                  
Operating Loss Carryforwards, Total 1,400,000       1,400,000        
Domestic Tax Authority [Member] | Indefinite Tax Period [Member]                  
Operating Loss Carryforwards, Total $ 22,800       $ 22,800