Inventory (Details Textual) - Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] $ in Thousands	Jul. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)
Variable Interest Entity [Line Items]
Number of VIE Land Purchase Contracts (in ones)	96	78
Aggregate purchase price of VIE lands	$ 1,260,000	$ 987,300
Deposits for purchase of lands with VIE entities	$ 58,300	$ 44,100