Supplemental Guarantor Information Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents		$ 41,874	$ 42,273	$ 91,061
Restricted cash		116	269
Contracts and accounts receivable		16,459	18,265
Intercompany Receivables		0	0
Due from affiliates		681	1,218
Real estate inventories		563,112	566,290
Investment in and advances to unconsolidated joint ventures		33,032	34,330
Investment in subsidiaries		0	0
Other assets		35,366	33,452
Total assets		690,640	696,097
Accounts payable		20,638	39,391
Accrued expenses and other liabilities		33,332	29,028
Intercompany Payables		0	0
Due to Affiliate		0	0
Unsecured revolving credit facility		84,000	67,500
Senior notes, net	[1]	315,591	320,148
Total liabilities		453,561	456,067
Stockholders' Equity Attributable to Parent		237,003	239,954
Non-controlling interest in subsidiary		76	76
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		237,079	240,030	$ 259,952	$ 264,080
Total liabilities and equity		690,640	696,097
Consolidation, Eliminations [Member]
Cash and cash equivalents		0	0
Restricted cash		0	0
Contracts and accounts receivable		(998)	(668)
Intercompany Receivables		(210,665)	(192,341)
Due from affiliates		0	0
Real estate inventories		0	0
Investment in and advances to unconsolidated joint ventures		0	0
Investment in subsidiaries		(401,754)	(396,466)
Other assets		(3)	(3)
Total assets		(613,420)	(589,478)
Accounts payable		0	0
Accrued expenses and other liabilities		(993)	(664)
Intercompany Payables		(210,665)	(192,341)
Due to Affiliate		(8)	(7)
Unsecured revolving credit facility		0	0
Senior notes, net		0	0
Total liabilities		(211,666)	(193,012)
Stockholders' Equity Attributable to Parent		(401,754)	(396,466)
Non-controlling interest in subsidiary		0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(401,754)	(396,466)
Total liabilities and equity		(613,420)	(589,478)
Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents		139	147
Restricted cash		0	0
Contracts and accounts receivable		0	0
Intercompany Receivables		0	0
Due from affiliates		0	0
Real estate inventories		0	0
Investment in and advances to unconsolidated joint ventures		0	0
Investment in subsidiaries		0	0
Other assets		0	0
Total assets		139	147
Accounts payable		4	0
Accrued expenses and other liabilities		59	71
Intercompany Payables		0	0
Due to Affiliate		0	0
Unsecured revolving credit facility		0	0
Senior notes, net		0	0
Total liabilities		63	71
Stockholders' Equity Attributable to Parent		0	0
Non-controlling interest in subsidiary		76	76
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		76	76
Total liabilities and equity		139	147
Guarantor Subsidiaries [Member]
Cash and cash equivalents		23,659	13,249
Restricted cash		116	269
Contracts and accounts receivable		17,447	18,926
Intercompany Receivables		0	0
Due from affiliates		681	1,218
Real estate inventories		563,112	566,290
Investment in and advances to unconsolidated joint ventures		33,032	34,330
Investment in subsidiaries		0	0
Other assets		15,194	14,812
Total assets		653,241	649,094
Accounts payable		20,370	39,151
Accrued expenses and other liabilities		20,444	21,129
Intercompany Payables		210,665	192,341
Due to Affiliate		8	7
Unsecured revolving credit facility		0	0
Senior notes, net		0	0
Total liabilities		251,487	252,628
Stockholders' Equity Attributable to Parent		401,754	396,466
Non-controlling interest in subsidiary		0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		401,754	396,466
Total liabilities and equity		653,241	649,094
Parent Company [Member]
Cash and cash equivalents		18,076	28,877
Restricted cash		0	0
Contracts and accounts receivable		10	7
Intercompany Receivables		210,665	192,341
Due from affiliates		0	0
Real estate inventories		0	0
Investment in and advances to unconsolidated joint ventures		0	0
Investment in subsidiaries		401,754	396,466
Other assets		20,175	18,643
Total assets		650,680	636,334
Accounts payable		264	240
Accrued expenses and other liabilities		13,822	8,492
Intercompany Payables		0	0
Due to Affiliate		0	0
Unsecured revolving credit facility		84,000	67,500
Senior notes, net		315,591	320,148
Total liabilities		413,677	396,380
Stockholders' Equity Attributable to Parent		237,003	239,954
Non-controlling interest in subsidiary		0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		237,003	239,954
Total liabilities and equity		$ 650,680	$ 636,334

[1] (1) The carrying value for the Senior Notes, as presented at March 31, 2019, is net of the unamortized discount of $1.5 million, unamortized premium of $1.2 million, and unamortized debt issuance costs of $4.1 million. The carrying value for the Senior Notes, as presented at December 31, 2018, is net of the unamortized discount of $1.7 million, unamortized premium of $1.3 million, and unamortized debt issuance costs of $4.5 million. The unamortized discount, unamortized premium and debt issuance costs are not factored into the estimated fair value.