Investments in Marketable Securities and Unconsolidated Entities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Equity Method Investments and Joint Ventures [Abstract]
Beazer’s investment in unconsolidated entities	$ 13,576	$ 44,997
Total equity of unconsolidated entities	59,336	385,040
Total outstanding borrowings of unconsolidated entities	11,254	85,938
Income from unconsolidated entity activity	(6,545)	(68)	(304)
Impairment of unconsolidated entity investment	0	(181)	0
Equity in income (loss) of unconsolidated entities - continuing operations	$ 6,545	$ (113)	$ 304