Segment Information - Schedule of Segment Financial Information Relating to Operations (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Operating revenue
Total operating revenue		$ 264,425	$ 197,168
Income before provision for income taxes
Income before provision for income taxes		14,986	11,176
Corporate
Income before provision for income taxes
Income before provision for income taxes		(7,804)	(6,450)
California | Reportable Operating Segments
Operating revenue
Total operating revenue	[1]	95,884	86,793
Income before provision for income taxes
Income before provision for income taxes		9,923	9,312
Arizona | Reportable Operating Segments
Operating revenue
Total operating revenue		21,047	7,186
Income before provision for income taxes
Income before provision for income taxes		1,499	304
Nevada | Reportable Operating Segments
Operating revenue
Total operating revenue		30,741	27,242
Income before provision for income taxes
Income before provision for income taxes		2,558	3,362
Colorado | Reportable Operating Segments
Operating revenue
Total operating revenue		26,393	18,189
Income before provision for income taxes
Income before provision for income taxes		429	(170)
Washington | Reportable Operating Segments
Operating revenue
Total operating revenue		32,901	31,280
Income before provision for income taxes
Income before provision for income taxes		1,423	2,573
Oregon | Reportable Operating Segments
Operating revenue
Total operating revenue		57,459	26,478
Income before provision for income taxes
Income before provision for income taxes		$ 6,958	$ 2,245

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