Interest - Schedule of Capitalized Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]
Capitalized interest in inventory, beginning of period	$ 52,562	$ 38,190
Interest incurred	32,441	28,418
Interest expense not qualified for capitalization and included as other expense	16,032	16,211
Capitalized interest amortized to house construction and land sales expenses	(7,135)	(8,475)
Capitalized interest in inventory, end of period	$ 61,836	$ 41,922