Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 469,934	$ 507,640	$ 492,869	$ 437,229	$ 525,664	$ 501,569	$ 485,452	$ 443,039	$ 1,907,672	$ 1,955,724	$ 2,006,640
Title insurance premiums, Direct
Disaggregation of Revenue [Line Items]
Revenues									597,510	602,858	618,170
Title insurance premiums, Agency
Disaggregation of Revenue [Line Items]
Revenues									1,003,959	1,016,356	1,009,797
Escrow fees
Disaggregation of Revenue [Line Items]
Revenues									124,660	142,463	154,752
Search, abstract and valuation services
Disaggregation of Revenue [Line Items]
Revenues									92,708	96,703	101,000
Other revenues
Disaggregation of Revenue [Line Items]
Revenues									69,045	76,205	104,662
Operating revenues
Disaggregation of Revenue [Line Items]
Revenues									$ 1,887,882	$ 1,934,585	$ 1,988,381