Investments in Marketable Securities and Unconsolidated Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]
Beazer’s investment in unconsolidated entities	$ 13,734	$ 13,576
Total equity of unconsolidated entities	52,118	59,336
Total outstanding borrowings of unconsolidated entities	12,206	11,254
Income from unconsolidated entity activity	536	6,545	$ 68
Impairment of unconsolidated entity investment	0	0	(181)
Total equity in income (loss) of unconsolidated entities	$ 536	$ 6,545	$ (113)