Segment Information - Schedule of Segment Financial Information Relating to 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
Total operating revenue		$ 490,339	$ 342,714	$ 1,171,885	$ 932,792
Income before provision for income taxes:
Income before provision for income taxes		43,965	24,809	58,495	62,400
Income before extinguishment of debt		43,965	24,809	80,323	62,400
Loss on extinguishment of debt		0	0	(21,828)	0
Corporate
Income before provision for income taxes:
Income before provision for income taxes		(12,786)	(8,095)	(31,112)	(23,838)
California
Operating revenue
Total operating revenue	[1]	230,960	111,520	462,277	309,199
California | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		31,150	10,364	53,907	28,252
Arizona
Operating revenue
Total operating revenue		39,607	28,758	118,695	85,399
Arizona | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		3,388	2,542	11,102	7,537
Nevada
Operating revenue
Total operating revenue		42,966	49,600	103,448	128,996
Nevada | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		4,372	5,291	7,811	12,587
Colorado
Operating revenue
Total operating revenue		24,811	35,316	77,149	85,885
Colorado | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		969	2,342	2,519	3,643
Washington
Operating revenue
Total operating revenue		71,788	42,247	185,523	112,512
Washington | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		6,164	2,899	10,249	6,767
Oregon
Operating revenue
Total operating revenue		80,207	75,273	224,793	210,801
Oregon | Reportable Operating Segments
Income before provision for income taxes:
Income before provision for income taxes		$ 10,708	$ 9,466	$ 25,847	$ 27,452

[1] Operating revenue in the California segment includes construction services revenue.