Supplemental Guarantor Information - Unaudited Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 134,933	$ 251,583	$ 146,261	$ 324,154	$ 324,154
Restricted cash	17,279	38,901
Accounts receivable (net of allowance of $872 and $1,052, respectively)	55,603	52,379
Income tax receivable	221	419
Owned inventory	1,750,652	1,697,590
Investments in unconsolidated entities	9,015	13,734
Deferred tax assets, net	329,644	325,373
Property and equipment, net	20,699	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	15,695	18,994
Total assets	2,333,741	2,421,203
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	98,556	113,539
Other liabilities	142,028	148,966
Intercompany	0	0
Total debt (net of discounts of $5,272 and $3,639, respectively)	1,459,605	1,528,275
Total liabilities	1,700,189	1,790,780
Stockholders’ equity	633,552	630,423
Total liabilities and stockholders’ equity	2,333,741	2,421,203
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	135,124	232,226	136,642	301,980
Restricted cash	15,465	37,177
Accounts receivable (net of allowance of $872 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	329,644	325,373
Property and equipment, net	0	0
Investments in subsidiaries	673,454	649,701
Intercompany	939,888	913,733
Other assets	12,666	12,519
Total assets	2,107,235	2,171,921
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	28,178	31,703
Intercompany	2,372	2,384
Total debt (net of discounts of $5,272 and $3,639, respectively)	1,443,133	1,507,411
Total liabilities	1,473,683	1,541,498
Stockholders’ equity	633,552	630,423
Total liabilities and stockholders’ equity	2,107,235	2,171,921
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	5,639	21,543	12,037	22,034
Restricted cash	1,814	1,724
Accounts receivable (net of allowance of $872 and $1,052, respectively)	55,600	52,378
Income tax receivable	0	0
Owned inventory	1,750,652	1,697,590
Investments in unconsolidated entities	8,242	12,961
Deferred tax assets, net	0	0
Property and equipment, net	20,699	22,230
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	3,025	6,471
Total assets	1,845,671	1,814,897
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	98,556	113,539
Other liabilities	113,400	116,718
Intercompany	946,658	916,925
Total debt (net of discounts of $5,272 and $3,639, respectively)	16,472	20,864
Total liabilities	1,175,086	1,168,046
Stockholders’ equity	670,585	646,851
Total liabilities and stockholders’ equity	1,845,671	1,814,897
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	940	1,006	981	1,614
Restricted cash	0	0
Accounts receivable (net of allowance of $872 and $1,052, respectively)	3	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	2,372	2,384
Other assets	4	4
Total assets	3,319	3,395
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	450	545
Intercompany	0	0
Total debt (net of discounts of $5,272 and $3,639, respectively)	0	0
Total liabilities	450	545
Stockholders’ equity	2,869	2,850
Total liabilities and stockholders’ equity	3,319	3,395
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(6,770)	(3,192)	$ (3,399)	$ (1,474)
Restricted cash	0	0
Accounts receivable (net of allowance of $872 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	(673,454)	(649,701)
Intercompany	(942,260)	(916,117)
Other assets	0	0
Total assets	(1,622,484)	(1,569,010)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(949,030)	(919,309)
Total debt (net of discounts of $5,272 and $3,639, respectively)	0	0
Total liabilities	(949,030)	(919,309)
Stockholders’ equity	(673,454)	(649,701)
Total liabilities and stockholders’ equity	$ (1,622,484)	$ (1,569,010)