Supplemental Guarantor Information - Unaudited Condensed Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017
Condensed Financial Statements, Captions [Line Items]
Allowance for Doubtful Accounts Receivable	$ 392		$ 330
ASSETS
Cash and cash equivalents	136,298		292,147	$ 168,381
Restricted cash	12,167		12,462	$ 12,735
Accounts receivable (net of allowance of $392 and $330, respectively)	28,005		36,323
Income tax receivable	119		88
Owned inventory	1,767,983		1,542,807
Investments in unconsolidated entities	4,237		3,994
Deferred tax assets, net	195,145		307,896
Property and equipment, net	22,212		17,566
Investments in subsidiaries	0		0
Intercompany	0		0
Other assets	10,861		7,712
Total assets	2,177,027	$ 2,220,995	2,220,995
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	143,135		103,484
Other liabilities	124,722		107,659
Intercompany	0		0
Total debt, net	1,326,503		1,327,412
Total liabilities	1,594,360		1,538,555
Stockholders’ equity	582,667		682,440
Total liabilities and stockholders’ equity	2,177,027		2,220,995
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(3,877)		(7,161)
Restricted cash	0		0
Accounts receivable (net of allowance of $392 and $330, 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	(615,081)		(808,067)
Intercompany	(980,790)		(608,505)
Other assets	0		0
Total assets	(1,599,748)		(1,423,733)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable			0
Other liabilities			0
Intercompany	(984,667)		(615,666)
Total debt, net			0
Total liabilities	(984,667)		(615,666)
Stockholders’ equity	(615,081)		(808,067)
Total liabilities and stockholders’ equity	(1,599,748)		(1,423,733)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Allowance for Doubtful Accounts Receivable	392		330
ASSETS
Cash and cash equivalents	130,457		283,191
Restricted cash	10,970		11,001
Accounts receivable (net of allowance of $392 and $330, respectively)			0
Income tax receivable	119		88
Owned inventory			0
Investments in unconsolidated entities	773		773
Deferred tax assets, net	195,145		307,896
Property and equipment, net			0
Investments in subsidiaries	615,081		808,067
Intercompany	978,478		606,168
Other assets	809		599
Total assets	1,931,832		2,017,783
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0		0
Other liabilities	24,476		11,229
Intercompany	2,312		2,337
Total debt, net	1,322,377		1,321,777
Total liabilities	1,349,165		1,335,343
Stockholders’ equity	582,667		682,440
Total liabilities and stockholders’ equity	1,931,832		2,017,783
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	9,087		15,393
Restricted cash	1,197		1,461
Accounts receivable (net of allowance of $392 and $330, respectively)	28,003		36,322
Income tax receivable	0		0
Owned inventory	1,767,983		1,542,807
Investments in unconsolidated entities	3,464		3,221
Deferred tax assets, net	0		0
Property and equipment, net	22,212		17,566
Investments in subsidiaries	0		0
Intercompany	0		0
Other assets	10,033		7,098
Total assets	1,841,979		1,623,868
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	143,135		103,484
Other liabilities	100,056		96,189
Intercompany	982,355		613,329
Total debt, net	4,126		5,635
Total liabilities	1,229,672		818,637
Stockholders’ equity	612,307		805,231
Total liabilities and stockholders’ equity	1,841,979		1,623,868
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	631		724
Restricted cash	0		0
Accounts receivable (net of allowance of $392 and $330, 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	2,312		2,337
Other assets	19		15
Total assets	2,964		3,077
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0		0
Other liabilities	190		241
Intercompany	0		0
Total debt, net	0		0
Total liabilities	190		241
Stockholders’ equity	2,774		2,836
Total liabilities and stockholders’ equity	$ 2,964		$ 3,077