Inventory (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended							9 Months Ended		12 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Jul. 31, 2014	Jul. 31, 2013	Oct. 31, 2013
Schedule Of Inventory [Line Items]
Inventory Write-down	$ 5,992				$ 239			$ 9,898	$ 1,977
Land controlled for future communities [Member]
Schedule Of Inventory [Line Items]
Inventory Write-down	1,192				139			2,198	837
Land Owned for Future Communities [Member]
Schedule Of Inventory [Line Items]
Inventory Write-down	0				0			0	0
Operating communities [Member]
Schedule Of Inventory [Line Items]
Inventory Write-down	$ 4,800	$ 1,600	$ 1,300	$ 2,200	$ 100	$ 340	$ 700	$ 7,700	$ 1,140	$ 3,340