Supplemental Guarantor Information - Unaudited Consolidating Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Deferred and other income tax benefit	$ (19)	$ (102)
Stock-based compensation expense	609	784
Inventory impairments and option contract abandonments	31	221
Net cash provided by (used in) operating activities	(113,878)	(87,453)
Cash flows from investing activities:
Capital expenditures	(3,200)	(1,772)
Investments in unconsolidated entities	(2,164)	(115)
Increases in restricted cash	(728)	(278)
Decreases in restricted cash	551	2,083
Net cash used in investing activities	(5,541)	(82)
Cash flows from financing activities:
Repayment of debt	(2,035)	(1,902)
Settlement of unconsolidated entity debt obligation	0	(500)
Debt issuance costs	(32)	(1,136)
Advances to/from subsidiaries	0	0
Payments for other financing activities	(413)	(26)
Net cash used in financing activities	(2,480)	(3,564)
Decrease in cash and cash equivalents	(121,899)	(91,099)
Cash and cash equivalents at beginning of period	504,459	487,795
Cash and cash equivalents at end of period	382,560	396,696
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(37,161)	315
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Increases in restricted cash	(433)	(132)
Decreases in restricted cash	39	1,958
Net cash used in investing activities	(394)	1,826
Cash flows from financing activities:
Repayment of debt	(1,913)	(1,861)
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	(32)	(1,136)
Advances to/from subsidiaries	(70,833)	(81,834)
Payments for other financing activities	(413)	(26)
Net cash used in financing activities	(73,191)	(84,857)
Decrease in cash and cash equivalents	(110,746)	(82,716)
Cash and cash equivalents at beginning of period	499,341	481,394
Cash and cash equivalents at end of period	388,595	398,678
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(76,683)	(87,817)
Cash flows from investing activities:
Capital expenditures	(3,200)	(1,772)
Investments in unconsolidated entities	(2,164)	(115)
Increases in restricted cash	(295)	(146)
Decreases in restricted cash	512	125
Net cash used in investing activities	(5,147)	(1,908)
Cash flows from financing activities:
Repayment of debt	(122)	(41)
Settlement of unconsolidated entity debt obligation		(500)
Debt issuance costs	0	0
Advances to/from subsidiaries	75,697	82,982
Payments for other financing activities	0	0
Net cash used in financing activities	75,575	82,441
Decrease in cash and cash equivalents	(6,255)	(7,284)
Cash and cash equivalents at beginning of period	6,324	8,215
Cash and cash equivalents at end of period	69	931
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(34)	49
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities:
Repayment of debt	0	0
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	0	0
Advances to/from subsidiaries	(69)	(96)
Payments for other financing activities	0	0
Net cash used in financing activities	(69)	(96)
Decrease in cash and cash equivalents	(103)	(47)
Cash and cash equivalents at beginning of period	1,637	646
Cash and cash equivalents at end of period	1,534	599
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
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities:
Repayment of debt	0	0
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	0	0
Advances to/from subsidiaries	(4,795)	(1,052)
Payments for other financing activities	0	0
Net cash used in financing activities	(4,795)	(1,052)
Decrease in cash and cash equivalents	(4,795)	(1,052)
Cash and cash equivalents at beginning of period	(2,843)	(2,460)
Cash and cash equivalents at end of period	$ (7,638)	$ (3,512)