Acquisition (Detail Textuals) (USD $)	0 Months Ended	3 Months Ended
	Feb. 04, 2014	Jan. 31, 2015	Apr. 30, 2014 home_sites	Jan. 31, 2014	Feb. 04, 2014 home_sites
Business Acquisition [Line Items]
Number of Homes to be Delivered		3,651
Sales Value of Outstanding Deliver Homes		$ 2,740,000,000
Shapell [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			Feb. 04, 2014
Business Acquisition, Name of Acquired Entity			Shapell Industries, Inc.
Business Acquisition, Date of Acquisition Agreement			Nov. 06, 2013
Payments to Acquire Businesses, Net of Cash Acquired	1,490,000,000
Number of home sites included in acquisition			4,950
Number of Homes to be Delivered	126				126
Sales Value of Outstanding Deliver Homes	105,300,000				105,300,000
Deposit Assets				161,000,000
Business Combination, Acquisition Related Costs		$ 0		$ 800,000