Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Mortgage banking fees	$ 19,388	$ 14,297
Income before taxes	55,105	30,958
Income tax expense	(20,064)	(10,835)
Net income	35,041	20,123
Basic earnings per share	$ 7.04	$ 3.99
Diluted earnings per share	$ 6.84	$ 3.90
Basic weighted average shares outstanding	4,979	5,044
Diluted weighted average shares outstanding	5,122	5,159
Homebuilding [Member]
Revenues	750,868	586,195
Other income	1,026	908
Cost of sales	(624,085)	(491,829)
Selling, general and administrative	(78,413)	(72,176)
Operating income	49,396	23,098
Interest expense	(5,452)	(116)
Income before taxes	43,944	22,982
Mortgage Banking [Member]
Mortgage banking fees	19,388	14,297
Interest income	955	1,665
Other income	113	76
General and administrative	(9,181)	(7,913)
Interest expense	(114)	(149)
Income before taxes	$ 11,161	$ 7,976