Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Mortgage banking fees	$ 7,536,923	$ 7,388,664	$ 7,163,674
Interest expense	(40,872)	(25,380)	(25,081)
Profit before taxes	1,078,033	1,025,795	959,732
Income tax expense	(176,785)	(147,256)	(162,535)
Net income	$ 901,248	$ 878,539	$ 797,197
Basic earnings per share (USD per share)	$ 244.11	$ 241.31	$ 219.58
Diluted earnings per share (USD per share)	$ 230.11	$ 221.13	$ 194.80
Basic weighted average shares outstanding (in Shares)	3,692	3,641	3,631
Diluted weighted average shares outstanding (in Shares)	3,917	3,973	4,092
Home Building
Mortgage banking fees	$ 7,328,889	$ 7,220,844	$ 7,004,304
Other income	16,938	24,779	11,839
Cost of sales	(5,937,401)	(5,849,862)	(5,692,127)
Selling, general and administrative	(431,008)	(447,547)	(428,874)
Interest expense	(39,458)	(24,335)	(24,036)
Profit before taxes	937,960	923,879	871,106
Operating income	977,418	948,214	895,142
Mortgage Banking
Mortgage banking fees	208,034	167,820	159,370
Interest income	8,930	12,142	11,593
Other income	3,249	2,857	2,546
General and administrative	(78,726)	(79,858)	(83,838)
Interest expense	(1,414)	(1,045)	(1,045)
Profit before taxes	$ 140,073	$ 101,916	$ 88,626