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Note 5 (Detail) - Write-Offs and Lots Walked Away From (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Number of Walk-Away Lots 513 828 698 1,186
Dollar Amount of Write-Offs $ 1,300 [1] $ 1,100 [1] $ 1,400 [1] $ 1,300 [1]
Northeast [Member]
        
Number of Walk-Away Lots 300   300  
Dollar Amount of Write-Offs 100 [1] 300 [1] 200 [1] 300 [1]
Mid-Atlantic [Member]
        
Number of Walk-Away Lots 24 3 164 182
Dollar Amount of Write-Offs    [1] 100 [1]    [1] 200 [1]
Midwest [Member]
        
Number of Walk-Away Lots   67   105
Dollar Amount of Write-Offs    [1] 100 [1]    [1] 100 [1]
Southeast [Member]
        
Number of Walk-Away Lots   593   734
Dollar Amount of Write-Offs 100 [1] 600 [1] 100 [1] 700 [1]
Southwest [Member]
        
Number of Walk-Away Lots 189 165 234 165
Dollar Amount of Write-Offs 1,100 [1]    [1] 1,100 [1]    [1]
West [Member]
        
Dollar Amount of Write-Offs    [1]    [1]    [1]    [1]
[1] 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. During the three and six months ended April 30, 2012 there were write-offs in the Southwest totaling $44 thousand and $52 thousand, respectively.