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Note 12 - Reduction of Inventory to Fair Value - Inventory Impairments by Homebuilding Segment (Details)
$ in Thousands
12 Months Ended
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Dollar amount of impairment $ 2,700 $ 2,100 $ 15,100
Homebuilding [Member]      
Number of communities 6 5 10
Dollar amount of impairment $ 2,700 $ 2,100 $ 15,100
Pre-impairment value [1] $ 17,500 $ 11,200 $ 52,900
Homebuilding [Member] | Northeast [Member]      
Number of communities 2 1 2
Dollar amount of impairment $ 200 $ 400 $ 3,300
Pre-impairment value [1] $ 7,800 $ 1,000 $ 22,200
Homebuilding [Member] | Mid-Atlantic [Member]      
Number of communities 1 1
Dollar amount of impairment $ 300 $ 1,500
Pre-impairment value [1] $ 1,700 $ 8,500
Homebuilding [Member] | Midwest [Member]      
Number of communities 1 1 2
Dollar amount of impairment $ 1,400 $ 100 $ 200
Pre-impairment value [1] $ 4,600 $ 500 $ 800
Homebuilding [Member] | Southeast [Member]      
Number of communities 1 3 3
Dollar amount of impairment $ 700 $ 1,600 $ 8,100
Pre-impairment value [1] $ 2,200 $ 9,700 $ 18,300
Homebuilding [Member] | Southwest [Member]      
Number of communities 1
Dollar amount of impairment $ 100
Pre-impairment value [1] $ 1,200
Homebuilding [Member] | West [Member]      
Number of communities 2
Dollar amount of impairment $ 2,000
Pre-impairment value [1] $ 3,100
[1] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.