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Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2014
Apr. 30, 2013
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Dollar Amount of Write-Offs $ 400 $ 1,300 $ 1,100 $ 1,400
Homebuilding [Member] | Northeast [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 40 300 239 300
Dollar Amount of Write-Offs 100 [1] 100 [1] 500 [1] 200 [1]
Homebuilding [Member] | Mid-Atlantic [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 88 24 521 164
Dollar Amount of Write-Offs    [1]    [1] 100 [1]    [1]
Homebuilding [Member] | Midwest [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 138   403  
Dollar Amount of Write-Offs 100 [1]    [1] 100 [1]    [1]
Homebuilding [Member] | Southeast [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 398   925  
Dollar Amount of Write-Offs 200 [1] 100 [1] 300 [1] 100 [1]
Homebuilding [Member] | Southwest [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 230 189 342 234
Dollar Amount of Write-Offs    [1] 1,100 [1] 100 [1] 1,100 [1]
Homebuilding [Member] | West [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Dollar Amount of Write-Offs    [1]    [1]    [1]    [1]
Homebuilding [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Number of Walk-Away Lots 894 513 2,430 698
Dollar Amount of Write-Offs 400 [1] 1,300 [1] 1,100 [1] 1,400 [1]
Mid-Atlantic [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Dollar Amount of Write-Offs 19 2   8
Southwest [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Write-Offs and Lots Walked Away From [Line Items]        
Dollar Amount of Write-Offs $ 57      
[1] During the three months ended April 30, 2014, there were write-offs in the Mid-Atlantic totaling $19 thousand and in the Southwest there were recoveries of $68 thousand, partially offset by write-offs of $57 thousand. During the three and six months ended April 30, 2013, there were write-offs in the Mid-Atlantic totaling $2 thousand and $8 thousand, respectively.