Other Income - Net (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended			12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015	Oct. 31, 2016
Revenues and expenses from land sales [Abstract]
Revenue	$ 4,633	$ 64,109	$ 151,470	$ 77,701
Expense	2,420	54,975	148,625	64,076
Income from land sales	2,417	6,527	7,503	11,018
Rental Property Joint Ventures Metro Washington, D.C. [Member]
Revenues and expenses from land sales [Abstract]
Retail Land Sales, Installment Method, Gross Profit, Deferred		(2,607)		(2,607)		$ (2,999)
Income from land sales				3,000
Home Building Joint Venture Metro New York Three [Member]
Revenues and expenses from land sales [Abstract]
Retail Land Sales, Installment Method, Gross Profit, Deferred					$ (9,300)
Deferred gain recognized	$ 204		$ 4,658