Supplemental Guarantor Information - Unaudited Consolidating Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (76,336)	$ (80,026)
Cash flows from investing activities:
Capital expenditures	(3,869)	(12,488)
Investments in unconsolidated entities	(400)	(810)
Payments of Capital Distribution	432	428
Increases in restricted cash	(1,044)	(888)
Decreases in restricted cash	7,562	551
Net cash provided by (used in) investing activities	2,681	(13,207)
Cash flows from financing activities:
Payments for Repurchase of Common Stock		(1,212)
Repayment of debt	(183,319)	(2,899)
Proceeds from issuance of new debt	200,000	0
Settlement of unconsolidated entity debt obligation	(500)	(15,862)
Debt issuance costs	(4,635)	(97)
Dividends paid		0
Advances to/from subsidiaries	0	0
Payments for other financing activities	(26)	(72)
Net cash provided by (used in) financing activities	11,520	(20,142)
Decrease in cash and cash equivalents	(62,135)	(113,375)
Cash and cash equivalents at beginning of period	487,795	370,403
Cash and cash equivalents at end of period	425,660	257,028
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(14,665)	(102,064)
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Payments of Capital Distribution	0	0
Increases in restricted cash	(668)	(255)
Decreases in restricted cash	7,367	551
Net cash provided by (used in) investing activities	6,699	296
Cash flows from financing activities:
Payments for Repurchase of Common Stock		(1,212)
Repayment of debt	(183,224)	(2,385)
Proceeds from issuance of new debt	200,000
Settlement of unconsolidated entity debt obligation	0	(15,862)
Debt issuance costs	(4,635)	(97)
Dividends paid		(1,800)
Advances to/from subsidiaries	(62,166)	15,028
Payments for other financing activities	(26)	(72)
Net cash provided by (used in) financing activities	(50,051)	(6,400)
Decrease in cash and cash equivalents	(58,017)	(108,168)
Cash and cash equivalents at beginning of period	481,394	360,723
Cash and cash equivalents at end of period	423,377	252,555
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(61,595)	21,676
Cash flows from investing activities:
Capital expenditures	(3,869)	(12,488)
Investments in unconsolidated entities	(400)	(810)
Payments of Capital Distribution	432	428
Increases in restricted cash	(376)	(633)
Decreases in restricted cash	195	0
Net cash provided by (used in) investing activities	(4,018)	(13,503)
Cash flows from financing activities:
Payments for Repurchase of Common Stock		0
Repayment of debt	(95)	(514)
Proceeds from issuance of new debt	0
Settlement of unconsolidated entity debt obligation	(500)	0
Debt issuance costs	0	0
Dividends paid		0
Advances to/from subsidiaries	63,544	(13,145)
Payments for other financing activities	0	0
Net cash provided by (used in) financing activities	62,949	(13,659)
Decrease in cash and cash equivalents	(2,664)	(5,486)
Cash and cash equivalents at beginning of period	8,215	10,488
Cash and cash equivalents at end of period	5,551	5,002
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(76)	362
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Payments of Capital Distribution	0	0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Payments for Repurchase of Common Stock		0
Repayment of debt	0	0
Proceeds from issuance of new debt	0
Settlement of unconsolidated entity debt obligation	0	0
Debt issuance costs	0	0
Dividends paid		1,800
Advances to/from subsidiaries	(56)	(1,835)
Payments for other financing activities	0	0
Net cash provided by (used in) financing activities	(56)	(35)
Decrease in cash and cash equivalents	(132)	327
Cash and cash equivalents at beginning of period	646	418
Cash and cash equivalents at end of period	514	745
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	0	0
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Payments of Capital Distribution	0	0
Increases in restricted cash	0	0
Decreases in restricted cash		0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Payments for Repurchase of Common Stock		0
Repayment of debt	0	0
Proceeds from issuance of new debt	0
Settlement of unconsolidated entity debt obligation	0	0
Debt issuance costs	0	0
Dividends paid		0
Advances to/from subsidiaries	(1,322)	(48)
Payments for other financing activities	0	0
Net cash provided by (used in) financing activities	(1,322)	(48)
Decrease in cash and cash equivalents	(1,322)	(48)
Cash and cash equivalents at beginning of period	(2,460)	(1,226)
Cash and cash equivalents at end of period	$ (3,782)	$ (1,274)