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Other Income - Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
Oct. 31, 2015
Schedule of Equity Method Investments [Line Items]          
Land sales earnings, net $ 888 $ 2,417 $ 4,175 $ 7,503  
Income from Ancillary Businesses, net 2,753 3,489 10,209 13,205  
Land Sales 10,949 4,633 56,136 151,470  
Rental Property Joint Venture Metro Washington, D.C. Two and Rental Property Joint Venture Belmont, MA [Member]          
Schedule of Equity Method Investments [Line Items]          
Land Sales 28,800        
Rental Property Joint Venture Metro Washington, D.C. Two [Member]          
Schedule of Equity Method Investments [Line Items]          
Land sales earnings, net 1,000        
Retail Land Sales, Installment Method, Gross Profit, Deferred 3,834  
Home Building Joint Venture Metro New York Four [Member]          
Schedule of Equity Method Investments [Line Items]          
Land Sales       $ 143,300  
Equity Method Investment, Ownership Percentage   20.00%   20.00%  
Home Building Joint Venture Metro New York Three [Member]          
Schedule of Equity Method Investments [Line Items]          
Equity Method Investment, Ownership Percentage         25.00%
Retail Land Sales, Installment Method, Gross Profit, Deferred         $ 9,300
Apartment living [Member]          
Schedule of Equity Method Investments [Line Items]          
Income from Ancillary Businesses, net $ 1,900 $ 1,400 $ 5,800 $ 4,200  
Co-venturer [Member] | Rental Property Joint Venture Metro Washington, D.C. Two and Rental Property Joint Venture Belmont, MA [Member]          
Schedule of Equity Method Investments [Line Items]          
Equity Method Investment, Ownership Percentage 50.00%   50.00%    
Co-venturer [Member] | Rental Property Joint Venture Metro Washington, D.C. Two [Member]          
Schedule of Equity Method Investments [Line Items]          
Land Sales $ 17,800