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Note 1 - Basis of Presentation (Details Textual)
3 Months Ended 6 Months Ended
Jan. 31, 2021
Apr. 30, 2021
Consolidated Joint Venture [Member]    
Noncontrolling Interest, Ownership Percentage by Parent   99.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners   1.00%
Homebuilding [Member]    
Number of Reportable Segments 6 6