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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, 2020
Oct. 31, 2019
Oct. 31, 2018
Amount of write-offs $ 6.8 $ 3.6 $ 1.4
Homebuilding [Member]      
Amount of write-offs 6.8 3.6 1.4
Homebuilding [Member] | Northeast [Member]      
Amount of write-offs 1.5 0.6 0.6
Homebuilding [Member] | Mid-Atlantic [Member]      
Amount of write-offs 0.0 0.5 0.2
Homebuilding [Member] | Midwest [Member]      
Amount of write-offs 3.5 0.9 0.1
Homebuilding [Member] | Southeast [Member]      
Amount of write-offs 0.8 0.3 0.0
Homebuilding [Member] | Southwest [Member]      
Amount of write-offs 0.6 0.6 0.2
Homebuilding [Member] | West [Member]      
Amount of write-offs $ 0.4 $ 0.7 $ 0.3