Estimated title losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balances at beginning of period	$ 459,053	$ 461,560
Provisions:
Current year	18,521	15,526
Previous policy years	111	160
Total provisions	18,632	15,686
Payments, net of recoveries:
Current year	(2,214)	(2,695)
Previous policy years	(19,227)	(20,772)
Total payments, net of recoveries	(21,441)	(23,467)
Effects of changes in foreign currency exchange rates	(8,662)	296
Balances at end of period	$ 447,582	$ 454,075
Loss ratios as a percentage of title operating revenues:
Current year provisions	4.20%	4.10%
Total provisions	4.20%	4.20%