Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 829,787	$ 590,676	$ 2,313,178	$ 1,543,206
Direct
Disaggregation of Revenue [Line Items]
Revenues	248,738	190,794	687,369	478,822
Agency
Disaggregation of Revenue [Line Items]
Revenues	401,762	282,605	1,138,023	802,022
Escrow fees
Disaggregation of Revenue [Line Items]
Revenues	63,455	53,384	183,638	127,903
Appraisal management, abstract and other ancillary services
Disaggregation of Revenue [Line Items]
Revenues	85,345	42,627	234,677	81,533
Other revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 30,487	$ 21,266	$ 69,471	$ 52,926