Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest expense	$ (22,385)	$ (7,529)	$ (1,892)
Income before taxes	418,696	275,077	207,576
Income tax expense	(152,219)	(94,489)	(78,156)
Net income	266,477	180,588	129,420
Basic earnings per share	$ 56.25	$ 36.04	$ 23.66
Diluted earnings per share	$ 54.81	$ 35.12	$ 23.01
Basic weighted average shares outstanding	4,737,124	5,011,058	5,469,159
Diluted weighted average shares outstanding	4,861,702	5,141,529	5,623,817
Homebuilding [Member]
Revenues	4,134,481	3,121,244	2,611,195
Other income	3,962	3,486	4,301
Cost of sales	(3,424,204)	(2,575,639)	(2,165,625)
Selling, general and administrative	(313,029)	(301,184)	(264,266)
Operating income	401,210	247,907	185,605
Interest expense	(21,840)	(6,983)	(1,017)
Income before taxes	379,370	240,924	184,588
Mortgage Banking [Member]
Mortgage banking fees	76,786	63,406	47,954
Interest income	4,983	4,504	5,702
Other income	696	564	456
General and administrative	(42,594)	(33,775)	(30,249)
Interest expense	(545)	(546)	(875)
Income before taxes	$ 39,326	$ 34,153	$ 22,988