Supplemental Guarantor Information - Unaudited Consolidating Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
ASSETS
Cash and cash equivalents	$ 138,680	$ 324,154	$ 382,560	$ 504,459
Restricted cash	64,092	62,941
Accounts receivable (net of allowance of $1,267)	32,316	34,429
Income tax receivable	46	46
Owned inventory	1,677,611	1,557,496
Consolidated inventory not owned	1,443	3,857
Investments in marketable securities and unconsolidated entities	34,735	38,341
Deferred tax assets, net	46	2,823
Property, plant and equipment, net	19,315	18,673
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	21,102	23,460
Total assets	1,989,386	2,066,220
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	65,845	106,237
Other liabilities	127,542	142,516
Intercompany	0	0
Obligations related to land not owned under option agreements	1,248	2,916
Total debt (net of discounts of $4,209 and $4,399 respectively)	1,536,591	1,535,433
Total liabilities	1,731,226	1,787,102
Stockholders’ equity	258,160	279,118
Total liabilities and stockholders’ equity	1,989,386	2,066,220
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	147,840	301,980	388,595	499,341
Restricted cash	62,905	61,945
Accounts receivable (net of allowance of $1,267)	0	0
Income tax receivable	46	46
Owned inventory	0	0
Consolidated inventory not owned	0	0
Investments in marketable securities and unconsolidated entities	773	773
Deferred tax assets, net	46	2,823
Property, plant and equipment, net	0	0
Investments in subsidiaries	242,515	253,540
Intercompany	1,323,583	1,195,349
Other assets	16,026	17,226
Total assets	1,793,734	1,833,682
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	20,816	38,871
Intercompany	2,402	2,405
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,209 and $4,399 respectively)	1,512,356	1,513,288
Total liabilities	1,535,574	1,554,564
Stockholders’ equity	258,160	279,118
Total liabilities and stockholders’ equity	1,793,734	1,833,682
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	(18)	22,034	69	6,324
Restricted cash	1,187	996
Accounts receivable (net of allowance of $1,267)	32,314	34,428
Income tax receivable	0	0
Owned inventory	1,677,611	1,557,496
Consolidated inventory not owned	1,443	3,857
Investments in marketable securities and unconsolidated entities	33,962	37,568
Deferred tax assets, net	0	0
Property, plant and equipment, net	19,315	18,673
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	4,986	6,144
Total assets	1,770,800	1,681,196
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	65,845	106,237
Other liabilities	106,043	102,833
Intercompany	1,334,255	1,196,823
Obligations related to land not owned under option agreements	1,248	2,916
Total debt (net of discounts of $4,209 and $4,399 respectively)	24,235	22,145
Total liabilities	1,531,626	1,430,954
Stockholders’ equity	239,174	250,242
Total liabilities and stockholders’ equity	1,770,800	1,681,196
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	1,530	1,614	1,534	1,637
Restricted cash	0	0
Accounts receivable (net of allowance of $1,267)	2	1
Income tax receivable	0	0
Owned inventory	0	0
Consolidated inventory not owned	0	0
Investments in marketable securities and unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property, plant and equipment, net	0	0
Investments in subsidiaries	0	0
Intercompany	2,402	2,405
Other assets	90	90
Total assets	4,024	4,110
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	683	812
Intercompany	0	0
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,209 and $4,399 respectively)	0	0
Total liabilities	683	812
Stockholders’ equity	3,341	3,298
Total liabilities and stockholders’ equity	4,024	4,110
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(10,672)	(1,474)	(7,638)	(2,843)
Restricted cash	0	0
Accounts receivable (net of allowance of $1,267)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Consolidated inventory not owned	0	0
Investments in marketable securities and unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property, plant and equipment, net	0	0
Investments in subsidiaries	(242,515)	(253,540)
Intercompany	(1,325,985)	(1,197,754)
Other assets	0	0
Total assets	(1,579,172)	(1,452,768)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(1,336,657)	(1,199,228)
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,209 and $4,399 respectively)	0	0
Total liabilities	(1,336,657)	(1,199,228)
Stockholders’ equity	(242,515)	(253,540)
Total liabilities and stockholders’ equity	$ (1,579,172)	$ (1,452,768)