Estimated title losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balances at beginning of period	$ 496,275	$ 459,053
Provisions:
Current year	61,147	39,811
Previous policy years	1,195	361
Total provisions	62,342	40,172
Payments, net of recoveries:
Current year	(7,682)	(5,420)
Previous policy years	(28,438)	(33,516)
Total payments, net of recoveries	(36,120)	(38,936)
Effects of changes in foreign currency exchange rates	2,486	(4,264)
Balances at end of period	$ 524,983	$ 456,025
Loss ratios as a percentage of title operating revenues:
Current year provisions	4.50%	4.30%
Total provisions	4.60%	4.30%