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Note 11 - Income Taxes (Details Textual)
$ in Thousands
 3 Months Ended 12 Months Ended 36 Months Ended
Oct. 31, 2020
USD ($)
Jul. 31, 2020
USD ($)
Apr. 30, 2020
USD ($)
Jan. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Jul. 31, 2019
USD ($)
Apr. 30, 2019
USD ($)
Jan. 31, 2019
USD ($)
Oct. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2020
USD ($)
Oct. 31, 2010
USD ($)
Income Tax Expense (Benefit), Total $ 1,810 $ 853 $ 100 $ 1,712 $ 1,221 $ 537 $ 345 $ 346 $ 4,475 $ 2,449 $ 3,626    
Deferred Tax Assets, Valuation Allowance, Total 577,534       623,220       577,534 623,220   $ 577,534 $ 577,500
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total $ 42,444 $ 16,216 $ 4,179 $ (7,436) (586) $ (7,064) $ (14,912) $ (17,106) $ 55,403 (39,668) 8,146 23,800  
Contract Pace Per Average Active Selling Community 16.4 17.8                      
Increase (Decrease) in Dollar Value of Backlog, Percentage                 61.30%        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total $ 300       400       $ 300 400   300  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total                 60 32 41    
Unrecognized Tax Benefits, Period Increase (Decrease), Total                 (200)        
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 700       $ 900       700 900   $ 700  
Domestic Tax Authority [Member]                          
Operating Income (Loss), Total                 (183,000) (4,000)      
Operating Income (Loss), Tax Effect                 38,400 800      
Income Tax Expense (Benefit), Total                 $ 0 0 0    
Open Tax Year                 2016 2017 2018 2019        
Domestic Tax Authority [Member] | Between 2028 and 2038 [Member]                          
Operating Loss Carryforwards, Total                         1,400
Domestic Tax Authority [Member] | Indefinite Tax Period [Member]                          
Operating Loss Carryforwards, Total                         15,700
State and Local Jurisdiction [Member]                          
Operating Income (Loss), Total                 $ (72,500) (1,300) (4,400)    
Income Tax Expense (Benefit), Total                 $ 4,475 $ 2,449 $ 3,626    
Operating Loss Carryforwards, Total                         2,400,000
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member]                          
Operating Loss Carryforwards, Total                         48,800
State and Local Jurisdiction [Member] | Between 2021 and 2025 [Member]                          
Operating Loss Carryforwards, Total                         232,600
State and Local Jurisdiction [Member] | Between 2026 and 2030 [Member]                          
Operating Loss Carryforwards, Total                         1,300,000
State and Local Jurisdiction [Member] | Between 2031 and 2035 [Member]                          
Operating Loss Carryforwards, Total                         587,900
State and Local Jurisdiction [Member] | Between 2036 and 2040 [Member]                          
Operating Loss Carryforwards, Total                         $ 239,200