Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Operating revenues	$ 845,209	$ 681,367
Direct
Disaggregation of Revenue [Line Items]
Operating revenues	205,562	194,993
Agency
Disaggregation of Revenue [Line Items]
Operating revenues	404,145	345,932
Escrow fees
Disaggregation of Revenue [Line Items]
Operating revenues	55,792	56,649
Real estate solutions and abstract fees
Disaggregation of Revenue [Line Items]
Operating revenues	108,802	68,620
Other revenues
Disaggregation of Revenue [Line Items]
Operating revenues	$ 70,908	$ 15,173