Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest expense	$ (5,723)	$ (5,374)	$ (11,517)	$ (10,940)
Income before taxes	108,824	80,181	158,531	135,286
Income tax expense	(40,646)	(29,491)	(66,504)	(49,555)
Net income	68,178	50,690	92,027	85,731
Basic earnings per share	$ 15.68	$ 10.37	$ 20.88	$ 17.38
Diluted earnings per share	$ 15.17	$ 10.11	$ 20.19	$ 16.92
Basic weighted average shares outstanding	4,349	4,889	4,408	4,934
Diluted weighted average shares outstanding	4,495	5,013	4,557	5,067
Homebuilding [Member]
Revenues	1,084,080	992,210	1,883,267	1,743,078
Other income	452	1,098	1,449	2,124
Cost of sales	(882,778)	(834,288)	(1,537,930)	(1,458,373)
Selling, general and administrative	(93,583)	(82,120)	(184,215)	(160,533)
Operating income	108,171	76,900	162,571	126,296
Interest expense	(5,593)	(5,237)	(11,277)	(10,689)
Income before taxes	102,578	71,663	151,294	115,607
Mortgage Banking [Member]
Mortgage banking fees	17,974	17,682	30,097	37,070
Interest income	825	1,047	2,009	2,002
Other income	194	178	253	291
General and administrative	(12,617)	(10,252)	(24,882)	(19,433)
Interest expense	(130)	(137)	(240)	(251)
Income before taxes	$ 6,246	$ 8,518	$ 7,237	$ 19,679