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Note 12 - Reduction of Inventory to Fair Value (Details Textual)
$ in Millions
12 Months Ended
Oct. 31, 2017
USD ($)
Oct. 31, 2016
USD ($)
Oct. 31, 2015
USD ($)
Number of Communities Evaluated for Impairment 372 413  
Number of Communities Performed Detailed Impairment Calculations 12 30  
Carrying Value of Communities Tested for Impairment $ 98.0 $ 125.4  
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent 2 9  
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent $ 45.0 $ 43.5  
Percentage Undiscounted Cash Flow Exceeds Carrying Amount 20.00%    
Impairment of Real Estate $ 15.1 24.5 $ 7.3
Land Option Write Offs 2.7 8.9 4.7
Homebuilding [Member]      
Impairment of Real Estate 15.1 24.5 7.3
Land Option Write Offs $ 2.7 $ 8.9 $ 4.7
Homebuilding [Member] | Real Estate Inventory [Member] | Minimum [Member]      
Fair Value Inputs, Discount Rate 18.30% 16.80% 17.30%
Homebuilding [Member] | Real Estate Inventory [Member] | Maximum [Member]      
Fair Value Inputs, Discount Rate 19.80% 18.80% 19.80%