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Note 12 - Reduction of Inventory to Fair Value - Write-offs and Lots Walked Away From (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Amount of write-offs $ 8.9 $ 4.7 $ 4.0
Homebuilding [Member]      
Amount of write-offs 8.9 4.7 4.0
Homebuilding [Member] | Northeast [Member]      
Amount of write-offs 1.6 0.9 0.9
Homebuilding [Member] | Mid-Atlantic [Member]      
Amount of write-offs 0.8 0.2 0.2
Homebuilding [Member] | Midwest [Member]      
Amount of write-offs 1.3 0.6 1.0
Homebuilding [Member] | Southeast [Member]      
Amount of write-offs 1.8 1.3 0.7
Homebuilding [Member] | Southwest [Member]      
Amount of write-offs 3.2 1.4 1.2
Homebuilding [Member] | West [Member]      
Amount of write-offs $ 0.2 $ 0.3