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Note 5 (Detail) (USD $)
 3 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Fair Value Inputs, Discount Rate 18.80%  
Impairment of Real Estate $ 587,000 [1] $ 3,100,000
Land Option Write-offs 79,000 [2] 200,000
Number of Communities Mothballed During the Period 1  
Number of Communities Mothballed 52  
Inventory, Real Estate, Mothballed Communities 124,200,000  
Inventory, Real Estate, Mothballed Communities, Accumulated Impairment Charges 465,900,000  
Residential Real Estate [Member]
    
33,800,000  
32,900,000  
Land [Member]
    
57,100,000  
45,300,000  
Northeast [Member]
    
Impairment of Real Estate 568,000 [1] 2,400,000
Land Option Write-offs 29,000 [2]  
Mid-Atlantic [Member]
    
Impairment of Real Estate 2,000 [1] 300,000
Land Option Write-offs 6,000 [2] 100,000
Southeast [Member]
    
Impairment of Real Estate 17,000 [1] 300,000
Land Option Write-offs 19,000 [2] 100,000
Southwest [Member]
    
Impairment of Real Estate    [1]  
Land Option Write-offs 11,000 [2]  
West [Member]
    
Impairment of Real Estate    [1]  
Land Option Write-offs $ 14,000 [2]  
Minimum [Member]
    
Fair Value Inputs, Discount Rate   16.80%
Maximum [Member]
    
Fair Value Inputs, Discount Rate   18.50%
[1] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.
[2] During the three months ended January 31, 2013 there were write-offs of $79 thousand. The write-offs were in the Northeast $29 thousand, in the Mid-Atlantic $6 thousand, in the Southeast $19 thousand, in the Southwest $11 thousand, and in the West $14 thousand.