Inventory (Details Textual) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014	Oct. 31, 2014
Inventory (Textual) [Abstract]
Real Estate Inventory Capitalized Interest Costs Impairment	$ 33,700	$ 35,400
Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member]
Variable Interest Entity [Line Items]
Number of VIE Land Purchase Contracts (in ones)	55		63
Aggregate purchase price of VIE lands	629,300		578,200
Deposits for purchase of lands with VIE entities	$ 29,700		$ 30,700