Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 492,869	$ 485,452	$ 930,099	$ 928,493
Title insurance premiums, Direct
Disaggregation of Revenue [Line Items]
Revenues	158,947	159,488	291,708	290,489
Title insurance premiums, Agency
Disaggregation of Revenue [Line Items]
Revenues	247,257	234,407	484,111	467,756
Escrow fees
Disaggregation of Revenue [Line Items]
Revenues	35,468	39,447	63,335	72,210
Search, abstract and valuation services
Disaggregation of Revenue [Line Items]
Revenues	25,114	28,030	46,901	56,200
Other revenues
Disaggregation of Revenue [Line Items]
Revenues	18,443	19,815	33,371	32,614
Operating revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 485,229	$ 481,187	$ 919,426	$ 919,269