Supplemental Guarantor Information - Unaudited Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 127,209	$ 251,583	$ 128,752	$ 324,154
Restricted cash	18,846	38,901
Accounts receivable (net of allowance of $866 and $1,052, respectively)	65,905	52,379
Income tax receivable	221	419
Owned inventory	1,731,850	1,697,590
Investments in unconsolidated entities	9,361	13,734
Deferred tax assets, net	324,763	325,373
Property and equipment, net	21,008	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	19,464	18,994
Total assets	2,318,627	2,421,203
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	109,449	113,539
Other liabilities	138,319	148,966
Intercompany	0	0
Total debt (net of discounts of $5,272 and $3,639, respectively)	1,429,483	1,528,275
Total liabilities	1,677,251	1,790,780
Stockholders’ equity	641,376	630,423
Total liabilities and stockholders’ equity	2,318,627	2,421,203
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(5,293)	(3,192)	(2,241)	(1,474)
Restricted cash	0	0
Accounts receivable (net of allowance of $866 and $1,052, respectively)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Investments in unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	(692,387)	(649,701)
Intercompany	(903,787)	(916,117)
Other assets	0	0
Total assets	(1,601,467)	(1,569,010)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(909,080)	(919,309)
Total debt (net of discounts of $5,272 and $3,639, respectively)	0	0
Total liabilities	(909,080)	(919,309)
Stockholders’ equity	(692,387)	(649,701)
Total liabilities and stockholders’ equity	(1,601,467)	(1,569,010)
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	129,927	232,226	112,142	301,980
Restricted cash	17,101	37,177
Accounts receivable (net of allowance of $866 and $1,052, respectively)	0	0
Income tax receivable	221	419
Owned inventory	0	0
Investments in unconsolidated entities	773	773
Deferred tax assets, net	324,763	325,373
Property and equipment, net	0	0
Investments in subsidiaries	692,387	649,701
Intercompany	901,414	913,733
Other assets	11,583	12,519
Total assets	2,078,169	2,171,921
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	20,068	31,703
Intercompany	2,373	2,384
Total debt (net of discounts of $5,272 and $3,639, respectively)	1,414,352	1,507,411
Total liabilities	1,436,793	1,541,498
Stockholders’ equity	641,376	630,423
Total liabilities and stockholders’ equity	2,078,169	2,171,921
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	1,702	21,543	17,881	22,034
Restricted cash	1,745	1,724
Accounts receivable (net of allowance of $866 and $1,052, respectively)	65,903	52,378
Income tax receivable	0	0
Owned inventory	1,731,850	1,697,590
Investments in unconsolidated entities	8,588	12,961
Deferred tax assets, net	0	0
Property and equipment, net	21,008	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	7,866	6,471
Total assets	1,838,662	1,814,897
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	109,449	113,539
Other liabilities	117,857	116,718
Intercompany	906,707	916,925
Total debt (net of discounts of $5,272 and $3,639, respectively)	15,131	20,864
Total liabilities	1,149,144	1,168,046
Stockholders’ equity	689,518	646,851
Total liabilities and stockholders’ equity	1,838,662	1,814,897
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	873	1,006	$ 970	$ 1,614
Restricted cash	0	0
Accounts receivable (net of allowance of $866 and $1,052, respectively)	2	1
Income tax receivable	0	0
Owned inventory	0	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	2,373	2,384
Other assets	15	4
Total assets	3,263	3,395
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	394	545
Intercompany	0	0
Total debt (net of discounts of $5,272 and $3,639, respectively)	0	0
Total liabilities	394	545
Stockholders’ equity	2,869	2,850
Total liabilities and stockholders’ equity	$ 3,263	$ 3,395