Inventory (Details Textual) - Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] $ in Thousands	Jan. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)
Variable Interest Entity [Line Items]
Number of VIE Land Purchase Contracts (in ones)	107	104
Aggregate purchase price of VIE lands	$ 1,770,000	$ 1,430,000
Deposits for purchase of lands with VIE entities	$ 88,300	$ 65,600