Supplemental Guarantor Information - Unaudited Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 144,881	$ 251,583	$ 138,680	$ 324,154
Restricted cash	39,351	38,901
Accounts receivable (net of allowance of $921 and $1,052, respectively)	50,555	52,379
Income tax receivable	269	419
Owned inventory	1,729,937	1,697,590
Consolidated inventory not owned		0
Investments in unconsolidated entities	11,721	13,734
Deferred tax assets, net	325,058	325,373
Property and equipment, net	20,236	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	16,688	18,994
Total assets	2,338,696	2,421,203
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	81,395	113,539
Other liabilities	122,268	148,966
Intercompany	0	0
Obligations related to land not owned under option agreements		0
Notes Payable	1,502,056	1,528,275
Total liabilities	1,705,719	1,790,780
Stockholders’ equity	632,977	630,423
Total liabilities and stockholders’ equity	2,338,696	2,421,203
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	152,824	232,226	147,840	301,980
Restricted cash	37,708	37,177
Accounts receivable (net of allowance of $921 and $1,052, respectively)	0	0
Income tax receivable	269	419
Owned inventory	0	0
Consolidated inventory not owned		0
Investments in unconsolidated entities	773	773
Deferred tax assets, net	325,058	325,373
Property and equipment, net	0	0
Investments in subsidiaries	662,183	649,701
Intercompany	950,547	913,733
Other assets	11,874	12,519
Total assets	2,141,236	2,171,921
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	20,632	31,703
Intercompany	2,384	2,384
Obligations related to land not owned under option agreements		0
Notes Payable	1,485,243	1,507,411
Total liabilities	1,508,259	1,541,498
Stockholders’ equity	632,977	630,423
Total liabilities and stockholders’ equity	2,141,236	2,171,921
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	(547)	21,543	(18)	22,034
Restricted cash	1,643	1,724
Accounts receivable (net of allowance of $921 and $1,052, respectively)	50,555	52,378
Income tax receivable	0	0
Owned inventory	1,729,937	1,697,590
Consolidated inventory not owned		0
Investments in unconsolidated entities	10,948	12,961
Deferred tax assets, net	0	0
Property and equipment, net	20,236	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	4,814	6,471
Total assets	1,817,586	1,814,897
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	81,395	113,539
Other liabilities	101,138	116,718
Intercompany	958,931	916,925
Obligations related to land not owned under option agreements		0
Notes Payable	16,813	20,864
Total liabilities	1,158,277	1,168,046
Stockholders’ equity	659,309	646,851
Total liabilities and stockholders’ equity	1,817,586	1,814,897
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	988	1,006	1,530	1,614
Restricted cash	0	0
Accounts receivable (net of allowance of $921 and $1,052, respectively)	0	1
Income tax receivable	0	0
Owned inventory	0	0
Consolidated inventory not owned		0
Investments in unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	0	0
Intercompany	2,384	2,384
Other assets	0	4
Total assets	3,372	3,395
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	498	545
Intercompany	0	0
Obligations related to land not owned under option agreements		0
Notes Payable	0	0
Total liabilities	498	545
Stockholders’ equity	2,874	2,850
Total liabilities and stockholders’ equity	3,372	3,395
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(8,384)	(3,192)	$ (10,672)	$ (1,474)
Restricted cash	0	0
Accounts receivable (net of allowance of $921 and $1,052, respectively)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Consolidated inventory not owned		0
Investments in unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	(662,183)	(649,701)
Intercompany	(952,931)	(916,117)
Other assets	0	0
Total assets	(1,623,498)	(1,569,010)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(961,315)	(919,309)
Obligations related to land not owned under option agreements		0
Notes Payable	0	0
Total liabilities	(961,315)	(919,309)
Stockholders’ equity	(662,183)	(649,701)
Total liabilities and stockholders’ equity	$ (1,623,498)	$ (1,569,010)