Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 507,640	$ 501,569	$ 1,437,739	$ 1,430,061
Title insurance premiums, Direct
Disaggregation of Revenue [Line Items]
Revenues	152,739	146,314	444,447	436,803
Title insurance premiums, Agency
Disaggregation of Revenue [Line Items]
Revenues	272,875	268,545	756,986	736,301
Escrow fees
Disaggregation of Revenue [Line Items]
Revenues	32,649	37,478	95,984	109,688
Search, abstract and valuation services
Disaggregation of Revenue [Line Items]
Revenues	24,105	24,201	71,006	80,401
Other revenues
Disaggregation of Revenue [Line Items]
Revenues	16,868	21,511	50,239	54,125
Operating revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 499,236	$ 498,049	$ 1,418,662	$ 1,417,318