Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest expense	$ (5,836)	$ (5,088)
Income before taxes	132,161	103,312
Income tax expense	(29,238)	(38,009)
Net income	$ 102,923	$ 65,303
Basic earnings per share	$ 27.78	$ 16.81
Diluted earnings per share	$ 25.12	$ 15.79
Basic weighted average shares outstanding	3,705	3,884
Diluted weighted average shares outstanding	4,097	4,135
Homebuilding [Member]
Revenues	$ 1,247,587	$ 1,121,504
Other income	1,102	767
Cost of sales	(1,026,017)	(925,760)
Selling, general and administrative	(99,904)	(98,015)
Operating income	122,768	98,496
Interest expense	(5,578)	(4,842)
Income before taxes	117,190	93,654
Mortgage Banking [Member]
Mortgage banking fees	29,505	22,522
Interest income	1,661	1,674
Other income	309	258
General and administrative	(16,246)	(14,550)
Interest expense	(258)	(246)
Income before taxes	$ 14,971	$ 9,658