Supplemental Guarantor Information - Unaudited Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	$ (77,849)	$ (172,532)
Cash flows from investing activities:
Capital expenditures	(2,663)	(2,934)
Proceeds from Sale of Buildings	2,437	0
Investments in unconsolidated entities	(1,779)	(1,144)
Proceeds from sale of marketable securities and unconsolidated entities	1,142	0
Increase in Restricted Cash	(1,119)	(1,445)
Decrease in Restricted Cash	669	294
Advances to/from subsidiaries	0	0
Net cash used in investing activities	(1,313)	(5,229)
Cash flows from financing activities:
Repayment of debt	(26,926)	(7,388)
Debt issuance costs	(413)	(126)
Advances to/from subsidiaries	0	0
Other financing activities	(201)	(199)
Net cash used in financing activities	(27,540)	(7,713)
Decrease in cash and cash equivalents	(106,702)	(185,474)
Cash and cash equivalents at beginning of period	251,583	324,154
Cash and cash equivalents at end of period	144,881	138,680
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(22,794)	(30,841)
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Proceeds from sale of marketable securities and unconsolidated entities	0
Increase in Restricted Cash	0	(959)
Decrease in Restricted Cash	0	0
Advances to/from subsidiaries	(33,119)	(114,977)
Net cash used in investing activities	(33,119)	(115,936)
Cash flows from financing activities:
Repayment of debt	(22,875)	(7,038)
Debt issuance costs	(413)	(126)
Advances to/from subsidiaries	0	0
Other financing activities	(201)	(199)
Net cash used in financing activities	(23,489)	(7,363)
Decrease in cash and cash equivalents	(79,402)	(154,140)
Cash and cash equivalents at beginning of period	232,226	301,980
Cash and cash equivalents at end of period	152,824	147,840
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(55,038)	(141,603)
Cash flows from investing activities:
Capital expenditures	(2,663)	(2,934)
Proceeds from Sale of Buildings	2,437
Investments in unconsolidated entities	(1,779)	(1,144)
Proceeds from sale of marketable securities and unconsolidated entities	1,142
Increase in Restricted Cash	(1,119)	(486)
Decrease in Restricted Cash	669	294
Advances to/from subsidiaries	0	0
Net cash used in investing activities	(1,313)	(4,270)
Cash flows from financing activities:
Repayment of debt	(4,051)	(350)
Debt issuance costs	0	0
Advances to/from subsidiaries	38,312	124,171
Other financing activities	0	0
Net cash used in financing activities	34,261	123,821
Decrease in cash and cash equivalents	(22,090)	(22,052)
Cash and cash equivalents at beginning of period	21,543	22,034
Cash and cash equivalents at end of period	(547)	(18)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(17)	(88)
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Proceeds from sale of marketable securities and unconsolidated entities	0
Increase in Restricted Cash	0	0
Decrease in Restricted Cash	0	0
Advances to/from subsidiaries	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities:
Repayment of debt	0	0
Debt issuance costs	0	0
Advances to/from subsidiaries	(1)	4
Other financing activities	0	0
Net cash used in financing activities	(1)	4
Decrease in cash and cash equivalents	(18)	(84)
Cash and cash equivalents at beginning of period	1,006	1,614
Cash and cash equivalents at end of period	988	1,530
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	0	0
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Proceeds from sale of marketable securities and unconsolidated entities	0
Increase in Restricted Cash	0	0
Decrease in Restricted Cash	0	0
Advances to/from subsidiaries	33,119	114,977
Net cash used in investing activities	33,119	114,977
Cash flows from financing activities:
Repayment of debt	0	0
Debt issuance costs	0	0
Advances to/from subsidiaries	(38,311)	(124,175)
Other financing activities	0	0
Net cash used in financing activities	(38,311)	(124,175)
Decrease in cash and cash equivalents	(5,192)	(9,198)
Cash and cash equivalents at beginning of period	(3,192)	(1,474)
Cash and cash equivalents at end of period	$ (8,384)	$ (10,672)