Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest expense	$ (5,624)	$ (6,081)	$ (15,526)	$ (17,955)
Income before taxes	185,003	184,996	433,035	396,043
Income tax expense	(67,611)	(68,526)	(158,664)	(147,120)
Net income	$ 117,392	$ 116,470	$ 274,371	$ 248,923
Basic earnings per share	$ 30.43	$ 28.75	$ 70.70	$ 61.34
Diluted earnings per share	$ 28.46	$ 27.11	$ 66.24	$ 58.32
Basic weighted average shares outstanding	3,858	4,050	3,881	4,058
Diluted weighted average shares outstanding	4,125	4,296	4,142	4,268
Homebuilding [Member]
Revenues	$ 1,507,451	$ 1,374,467	$ 3,990,696	$ 3,537,116
Other income	703	643	2,223	2,490
Cost of sales	(1,242,292)	(1,111,672)	(3,294,421)	(2,880,194)
Selling, general and administrative	(92,867)	(88,664)	(290,925)	(279,207)
Operating income	172,995	174,774	407,573	380,205
Interest expense	(5,338)	(5,900)	(14,734)	(17,499)
Income before taxes	167,657	168,874	392,839	362,706
Mortgage Banking [Member]
Mortgage banking fees	30,118	27,884	79,082	66,617
Interest income	2,000	1,972	5,111	4,353
Other income	473	363	1,140	711
General and administrative	(14,959)	(13,916)	(44,345)	(37,888)
Interest expense	(286)	(181)	(792)	(456)
Income before taxes	$ 17,346	$ 16,122	$ 40,196	$ 33,337