Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Mortgage banking fees	$ 63,406	$ 47,954	$ 61,134
Interest income	4,504	5,702	5,411
Interest expense	(7,529)	(1,892)	(6,029)
Income before taxes	275,077	207,576	322,393
Income tax expense	(94,489)	(78,156)	(116,388)
Net income	180,588	129,420	206,005
Basic earnings per share	$ 36.04	$ 23.66	$ 34.96
Diluted earnings per share	$ 35.12	$ 23.01	$ 33.42
Basic weighted average shares outstanding	5,011	5,469	5,893
Diluted weighted average shares outstanding	5,142	5,624	6,165
Homebuilding [Member]
Revenues	3,121,244	2,611,195	2,980,758
Other income	3,486	4,301	9,299
Cost of sales	(2,575,639)	(2,165,625)	(2,438,292)
Selling, general and administrative	(301,184)	(264,266)	(257,394)
Operating income	247,907	185,605	294,371
Interest expense	(6,983)	(1,017)	(4,903)
Income before taxes	240,924	184,588	289,468
Mortgage Banking [Member]
Mortgage banking fees	63,406	47,954	61,134
Interest income	4,504	5,702	5,411
Other income	564	456	767
General and administrative	(33,775)	(30,249)	(33,261)
Interest expense	(546)	(875)	(1,126)
Income before taxes	$ 34,153	$ 22,988	$ 32,925