Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 590,676	$ 507,851	$ 1,543,206	$ 1,364,741
Direct
Disaggregation of Revenue [Line Items]
Revenues	190,794	174,635	478,822	448,920
Agency
Disaggregation of Revenue [Line Items]
Revenues	282,605	254,155	802,022	699,835
Escrow fees
Disaggregation of Revenue [Line Items]
Revenues	53,384	38,666	127,903	100,570
Search, abstract and valuation services
Disaggregation of Revenue [Line Items]
Revenues	42,627	20,922	81,533	63,109
Other revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 21,266	$ 19,473	$ 52,926	$ 52,307