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Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment (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) - Inventory Impairments by Homebuilding Segment [Line Items]        
Dollar Amount of Impairment $ 100 $ 900 $ 100 $ 1,500
Homebuilding [Member] | Northeast [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Number of Communities 1 1 1 2
Dollar Amount of Impairment 100 900 100 [1] 1,500
Pre-Impairment Value 200 [2] 2,300 [2] 200 [2] 5,200 [2]
Homebuilding [Member] | Mid-Atlantic [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Number of Communities       1
Dollar Amount of Impairment        [1] 2
Pre-Impairment Value    [2]    [2]    [2] 100 [2]
Homebuilding [Member] | Midwest [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Dollar Amount of Impairment        [1]  
Pre-Impairment Value    [2]    [2]    [2]    [2]
Homebuilding [Member] | Southeast [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Number of Communities       1
Dollar Amount of Impairment        [1] 17
Pre-Impairment Value    [2]    [2]    [2] 400 [2]
Homebuilding [Member] | Southwest [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Dollar Amount of Impairment        [1]  
Pre-Impairment Value    [2]    [2]    [2]    [2]
Homebuilding [Member] | West [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Dollar Amount of Impairment        [1]  
Pre-Impairment Value    [2]    [2]    [2]    [2]
Homebuilding [Member]
        
Note 5 - Reduction of Inventory to Fair Value (Details) - Inventory Impairments by Homebuilding Segment [Line Items]        
Number of Communities 1 1 1 4
Dollar Amount of Impairment 100 900 100 [1] 1,500
Pre-Impairment Value $ 200 [2] $ 2,300 [2] $ 200 [2] $ 5,700 [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.