Supplemental Guarantor Information Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 42,273	$ 123,546	$ 30,496
Restricted cash	269	424
Contracts and accounts receivable	18,265	23,224
Intercompany Receivables	0	0
Due from affiliates	1,218	1,060
Real estate inventories	566,290	416,143
Investment in and advances to unconsolidated joint ventures	34,330	55,824
Investment in subsidiaries	0	0
Other assets	33,452	24,291
Total assets	696,097	644,512
Accounts payable	39,391	23,722
Accrued expenses and other liabilities	29,028	38,054
Intercompany Payables	0	0
Due to Affiliate	0	0
Unsecured revolving credit facility	67,500	0
Senior notes, net	320,148	318,656
Total liabilities	456,067	380,432
Stockholders' Equity Attributable to Parent	239,954	263,990
Non-controlling interest in subsidiary	76	90
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	240,030	264,080	$ 244,624	$ 221,697
Total liabilities and equity	696,097	644,512
Consolidation, Eliminations [Member]
Cash and cash equivalents	0	0
Restricted cash	0	0
Contracts and accounts receivable	(668)	(1,024)
Intercompany Receivables	(192,341)	(129,414)
Due from affiliates	0	0
Real estate inventories	0	0
Investment in and advances to unconsolidated joint ventures	0	0
Investment in subsidiaries	(396,466)	(356,443)
Other assets	(3)	0
Total assets	(589,478)	(486,881)
Accounts payable	0	0
Accrued expenses and other liabilities	(664)	(1,014)
Intercompany Payables	(192,341)	(129,414)
Due to Affiliate	(7)	(10)
Unsecured revolving credit facility	0
Senior notes, net	0	0
Total liabilities	(193,012)	(130,438)
Stockholders' Equity Attributable to Parent	(396,466)	(356,443)
Non-controlling interest in subsidiary	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(396,466)	(356,443)
Total liabilities and equity	(589,478)	(486,881)
Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents	147	188
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	147	188
Accounts payable	0	6
Accrued expenses and other liabilities	71	80
Intercompany Payables	0	0
Due to Affiliate	0	0
Unsecured revolving credit facility	0
Senior notes, net	0	0
Total liabilities	71	86
Stockholders' Equity Attributable to Parent	0	12
Non-controlling interest in subsidiary	76	90
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	76	102
Total liabilities and equity	147	188
Guarantor Subsidiaries [Member]
Cash and cash equivalents	13,249	23,772
Restricted cash	269	424
Contracts and accounts receivable	18,926	24,238
Intercompany Receivables	0	0
Due from affiliates	1,218	1,060
Real estate inventories	566,290	416,143
Investment in and advances to unconsolidated joint ventures	34,330	55,824
Investment in subsidiaries	0	0
Other assets	14,812	15,827
Total assets	649,094	537,288
Accounts payable	39,151	23,479
Accrued expenses and other liabilities	21,129	27,954
Intercompany Payables	192,341	129,414
Due to Affiliate	7	10
Unsecured revolving credit facility	0
Senior notes, net	0	0
Total liabilities	252,628	180,857
Stockholders' Equity Attributable to Parent	396,466	356,431
Non-controlling interest in subsidiary	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	396,466	356,431
Total liabilities and equity	649,094	537,288
Parent Company [Member]
Cash and cash equivalents	28,877	99,586
Restricted cash	0	0
Contracts and accounts receivable	7	10
Intercompany Receivables	192,341	129,414
Due from affiliates	0	0
Real estate inventories	0	0
Investment in and advances to unconsolidated joint ventures	0	0
Investment in subsidiaries	396,466	356,443
Other assets	18,643	8,464
Total assets	636,334	593,917
Accounts payable	240	237
Accrued expenses and other liabilities	8,492	11,034
Intercompany Payables	0	0
Due to Affiliate	0	0
Unsecured revolving credit facility	67,500
Senior notes, net	320,148	318,656
Total liabilities	396,380	329,927
Stockholders' Equity Attributable to Parent	239,954	263,990
Non-controlling interest in subsidiary	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	239,954	263,990
Total liabilities and equity	$ 636,334	$ 593,917