Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest expense	$ (4,814)	$ (5,956)	$ (9,902)	$ (11,874)
Income before taxes	144,720	148,684	248,032	211,047
Income tax expense	(53,044)	(55,289)	(91,053)	(78,594)
Net income	$ 91,676	$ 93,395	$ 156,979	$ 132,453
Basic earnings per share	$ 23.51	$ 22.97	$ 40.34	$ 32.61
Diluted earnings per share	$ 22.01	$ 21.91	$ 37.82	$ 31.17
Basic weighted average shares outstanding	3,900	4,066	3,892	4,062
Diluted weighted average shares outstanding	4,165	4,262	4,151	4,249
Homebuilding [Member]
Revenues	$ 1,361,741	$ 1,221,111	$ 2,483,245	$ 2,162,649
Other income	753	1,122	1,520	1,847
Cost of sales	(1,126,369)	(986,854)	(2,052,129)	(1,768,522)
Selling, general and administrative	(100,043)	(92,314)	(198,058)	(190,543)
Operating income	136,082	143,065	234,578	205,431
Interest expense	(4,554)	(5,817)	(9,396)	(11,599)
Income before taxes	131,528	137,248	225,182	193,832
Mortgage Banking [Member]
Mortgage banking fees	26,442	22,522	48,964	38,733
Interest income	1,437	1,303	3,111	2,381
Other income	409	243	667	348
General and administrative	(14,836)	(12,493)	(29,386)	(23,972)
Interest expense	(260)	(139)	(506)	(275)
Income before taxes	$ 13,192	$ 11,436	$ 22,850	$ 17,215