Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Mortgage banking fees	$ 7,163,674	$ 6,305,840	$ 5,822,544
Interest expense	(25,081)	(24,185)	(21,707)
Income before taxes	959,732	846,911	661,697
Income tax expense	(162,535)	(309,390)	(236,435)
Net income	$ 797,197	$ 537,521	$ 425,262
Basic earnings per share (USD per share)	$ 219.58	$ 144.00	$ 110.53
Diluted earnings per share (USD per share)	$ 194.80	$ 126.77	$ 103.61
Basic weighted average shares outstanding (in Shares)	3,631	3,733	3,847
Diluted weighted average shares outstanding (in Shares)	4,092	4,240	4,104
Homebuilding:
Mortgage banking fees	$ 7,004,304	$ 6,175,521	$ 5,709,223
Other income	11,839	6,536	2,820
Cost of sales	(5,692,127)	(4,990,378)	(4,707,861)
Selling, general and administrative	(428,874)	(392,272)	(382,459)
Operating income	895,142	799,407	621,723
Interest expense	(24,036)	(23,037)	(20,621)
Income before taxes	871,106	776,370	601,102
Mortgage Banking:
Mortgage banking fees	159,370	130,319	113,321
Interest income	11,593	7,850	7,569
Other income	2,546	2,048	1,652
General and administrative	(83,838)	(68,528)	(60,861)
Interest expense	(1,045)	(1,148)	(1,086)
Income before taxes	$ 88,626	$ 70,541	$ 60,595