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Note 5 (Detail) - Inventory Impairments by Homebuilding Segment (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 Communities 1 6 4 17
Dollar Amount of Impairment $ 900 $ 2,100 $ 1,500 [1] $ 5,200
Pre-Impairment Value 2,300 [2] 4,700 [2] 5,700 [2] 23,400 [2]
Northeast [Member]
        
Number of Communities 1   2 5
Dollar Amount of Impairment 900   1,500 [1] 2,400
Pre-Impairment Value 2,300 [2]    [2] 5,200 [2] 16,100 [2]
Mid-Atlantic [Member]
        
Number of Communities   1 1 3
Dollar Amount of Impairment   100    [1] 400
Pre-Impairment Value    [2] 200 [2] 100 [2] 800 [2]
Midwest [Member]
        
Number of Communities       1
Dollar Amount of Impairment        [1] 100
Pre-Impairment Value    [2]    [2]    [2] 1,100 [2]
Southeast [Member]
        
Number of Communities   5 1 8
Dollar Amount of Impairment   2,000    [1] 2,300
Pre-Impairment Value    [2] 4,500 [2] 400 [2] 5,400 [2]
Southwest [Member]
        
Dollar Amount of Impairment        [1]  
Pre-Impairment Value    [2]    [2]    [2]    [2]
West [Member]
        
Dollar Amount of Impairment        [1]  
Pre-Impairment Value    [2]    [2]    [2]    [2]
[1] During the six months ended April 30, 2013, the Mid-Atlantic had an impairment totaling $2 thousand and the Southeast had an impairment totaling $17 thousand.
[2] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.