Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating revenue
Sales	$ 490,304	$ 342,628	$ 1,171,791	$ 928,982
Construction services	35	86	94	3,810
Management fees	0	0	0	0
Operating revenue	490,339	342,714	1,171,885	932,792
Operating costs
Cost of sales — homes	(401,700)	(285,896)	(973,212)	(769,705)
Construction services	(35)	(86)	(41)	(3,458)
Sales and marketing	(21,935)	(18,246)	(57,924)	(51,351)
General and administrative	(22,951)	(17,360)	(61,447)	(51,879)
Other	(548)	198	(1,548)	(612)
Total operating costs	(447,169)	(321,390)	(1,094,172)	(877,005)
Income from subsidiaries	0	0	0	0
Operating income (loss)	43,170	21,324	77,713	55,787
Equity in income of unconsolidated joint ventures	1,160	1,435	2,622	3,810
Other income (expense), net	(365)	2,050	(12)	2,803
Income before extinguishment of debt	43,965	24,809	80,323	62,400
Loss on extinguishment of debt	0	0	(21,828)	0
Income (loss) before provision for income taxes	43,965	24,809	58,495	62,400
Provision for income taxes	(13,905)	(8,295)	(17,480)	(20,859)
Net income (loss)	30,060	16,514	41,015	41,541
Less: Net income attributable to noncontrolling interests	(2,642)	(3,445)	(4,643)	(4,897)
Net income available to common stockholders	27,418	13,069	36,372	36,644
Reporting Entities | Guarantor Subsidiaries
Operating revenue
Sales	218,033	181,594	535,828	494,597
Construction services	0	0	0	0
Management fees	0	0	0	0
Operating revenue	218,033	181,594	535,828	494,597
Operating costs
Cost of sales — homes	(181,184)	(151,306)	(445,737)	(411,339)
Construction services	0	0	0	0
Sales and marketing	(11,521)	(9,774)	(29,241)	(26,731)
General and administrative	(3,780)	(3,091)	(12,161)	(10,129)
Other	86	69	232	(14)
Total operating costs	(196,399)	(164,102)	(486,907)	(448,213)
Income from subsidiaries	0	0	0	0
Operating income (loss)	21,634	17,492	48,921	46,384
Equity in income of unconsolidated joint ventures	341	295	879	809
Other income (expense), net	(4)	(19)	(10)	(34)
Income before extinguishment of debt			49,790
Loss on extinguishment of debt			0
Income (loss) before provision for income taxes	21,971	17,768	49,790	47,159
Provision for income taxes	0	0	0	0
Net income (loss)	21,971	17,768	49,790	47,159
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income available to common stockholders	21,971	17,768	49,790	47,159
Reporting Entities | Non-Guarantor Subsidiaries
Operating revenue
Sales	60,954	55,072	130,957	89,926
Construction services	0	0	0	0
Management fees	0	0	0	0
Operating revenue	60,954	55,072	130,957	89,926
Operating costs
Cost of sales — homes	(53,225)	(48,397)	(115,554)	(79,298)
Construction services	0	0	0	0
Sales and marketing	(2,510)	(2,267)	(7,204)	(6,540)
General and administrative	0	(1)	(1)	(1)
Other	1	(11)	6	(11)
Total operating costs	(55,734)	(50,676)	(122,753)	(85,850)
Income from subsidiaries	0	0	0	0
Operating income (loss)	5,220	4,396	8,204	4,076
Equity in income of unconsolidated joint ventures	0	0	0	0
Other income (expense), net	(408)	(481)	(1,074)	(1,036)
Income before extinguishment of debt			7,130
Loss on extinguishment of debt			0
Income (loss) before provision for income taxes	4,812	3,915	7,130	3,040
Provision for income taxes	0	0	0	0
Net income (loss)	4,812	3,915	7,130	3,040
Less: Net income attributable to noncontrolling interests	(2,642)	(3,445)	(4,643)	(4,897)
Net income available to common stockholders	2,170	470	2,487	(1,857)
Reporting Entities | Delaware Lyon
Operating revenue
Sales	0	0	0	0
Construction services	0	0	0	0
Management fees	0	0	0	0
Operating revenue	0	0	0	0
Operating costs
Cost of sales — homes	0	0	0	0
Construction services	0	0	0	0
Sales and marketing	0	0	0	0
General and administrative	0	0	0	0
Other	0	0	0	0
Total operating costs	0	0	0	0
Income from subsidiaries	27,418	13,069	36,372	36,644
Operating income (loss)	27,418	13,069	36,372	36,644
Equity in income of unconsolidated joint ventures	0	0	0	0
Other income (expense), net	0	0	0	0
Income before extinguishment of debt			36,372
Loss on extinguishment of debt			0
Income (loss) before provision for income taxes	27,418	13,069	36,372	36,644
Provision for income taxes	0	0	0	0
Net income (loss)	27,418	13,069	36,372	36,644
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income available to common stockholders	27,418	13,069	36,372	36,644
Reporting Entities | California Lyon
Operating revenue
Sales	211,317	105,962	505,006	344,459
Construction services	35	86	94	3,810
Management fees	(1,899)	(1,541)	(3,501)	(2,587)
Operating revenue	209,453	104,507	501,599	345,682
Operating costs
Cost of sales — homes	(165,392)	(84,652)	(408,420)	(276,481)
Construction services	(35)	(86)	(41)	(3,458)
Sales and marketing	(7,904)	(6,205)	(21,479)	(18,080)
General and administrative	(19,171)	(14,268)	(49,285)	(41,749)
Other	(635)	140	(1,786)	(587)
Total operating costs	(193,137)	(105,071)	(481,011)	(340,355)
Income from subsidiaries	6,162	3,548	13,328	7,472
Operating income (loss)	22,478	2,984	33,916	12,799
Equity in income of unconsolidated joint ventures	819	1,140	1,743	3,001
Other income (expense), net	47	2,550	1,072	3,873
Income before extinguishment of debt			36,731
Loss on extinguishment of debt			(21,828)
Income (loss) before provision for income taxes	23,344	6,674	14,903	19,673
Provision for income taxes	(13,905)	(8,295)	(17,480)	(20,859)
Net income (loss)	9,439	(1,621)	(2,577)	(1,186)
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income available to common stockholders	9,439	(1,621)	(2,577)	(1,186)
Consolidation, Eliminations
Operating revenue
Sales	0	0	0	0
Construction services	0	0	0	0
Management fees	1,899	1,541	3,501	2,587
Operating revenue	1,899	1,541	3,501	2,587
Operating costs
Cost of sales — homes	(1,899)	(1,541)	(3,501)	(2,587)
Construction services	0	0	0	0
Sales and marketing	0	0	0	0
General and administrative	0	0	0	0
Other	0	0	0	0
Total operating costs	(1,899)	(1,541)	(3,501)	(2,587)
Income from subsidiaries	(33,580)	(16,617)	(49,700)	(44,116)
Operating income (loss)	(33,580)	(16,617)	(49,700)	(44,116)
Equity in income of unconsolidated joint ventures	0	0	0	0
Other income (expense), net	0	0	0	0
Income before extinguishment of debt			(49,700)
Loss on extinguishment of debt			0
Income (loss) before provision for income taxes	(33,580)	(16,617)	(49,700)	(44,116)
Provision for income taxes	0	0	0	0
Net income (loss)	(33,580)	(16,617)	(49,700)	(44,116)
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income available to common stockholders	$ (33,580)	$ (16,617)	$ (49,700)	$ (44,116)