Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest expense	$ (23,140)	$ (22,385)	$ (7,529)
Income before taxes	453,546	418,696	275,077
Income tax expense	(171,916)	(152,219)	(94,489)
Net income	281,630	266,477	180,588
Basic earnings per share	$ 65.83	$ 56.25	$ 36.04
Diluted earnings per share	$ 63.50	$ 54.81	$ 35.12
Basic weighted average shares outstanding	4,278	4,737	5,011
Diluted weighted average shares outstanding	4,435	4,862	5,142
Homebuilding [Member]
Revenues	4,375,059	4,134,481	3,121,244
Other income	2,853	3,962	3,486
Cost of sales	(3,568,586)	(3,424,204)	(2,575,639)
Selling, general and administrative	(358,851)	(313,029)	(301,184)
Operating income	450,475	401,210	247,907
Interest expense	(22,591)	(21,840)	(6,983)
Income before taxes	427,884	379,370	240,924
Mortgage Banking [Member]
Mortgage banking fees	69,509	76,786	63,406
Interest income	4,940	4,983	4,504
Other income	778	696	564
General and administrative	(49,016)	(42,594)	(33,775)
Interest expense	(549)	(545)	(546)
Income before taxes	$ 25,662	$ 39,326	$ 34,153