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Note 2 - Business (Details Textual)
12 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Number of Communities 130    
Homebuilding [Member]      
Number of Reportable Segments 6    
Homebuilding [Member] | Segment Concentration Risk [Member] | Sales Revenue, Net [Member]      
Concentration Risk, Percentage 98.00% 97.00% 97.00%