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Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs $ 4.7 $ 4.0 $ 2.6
Homebuilding [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 4.7 4.0 2.6
Homebuilding [Member] | Northeast [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 0.9 0.9 0.7
Homebuilding [Member] | Mid-Atlantic [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 0.2 0.2 0.1
Homebuilding [Member] | Midwest [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 0.6 1.0 0.2
Homebuilding [Member] | Southeast [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 1.3 0.7 0.2
Homebuilding [Member] | Southwest [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs 1.4 $ 1.2 $ 1.4
Homebuilding [Member] | West [Member]      
Note 12 - Reduction of Inventory to Fair Value (Details) - Write-offs and Lots Walked Away From [Line Items]      
Amount of write-offs $ 0.3