Estimated title losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balances at beginning of period	$ 496,275	$ 459,053
Provisions:
Current year	91,259	68,063
Previous policy years	1,428	537
Total provisions	92,687	68,600
Payments, net of recoveries:
Current year	(12,181)	(9,595)
Previous policy years	(40,745)	(49,390)
Total payments, net of recoveries	(52,926)	(58,985)
Effects of changes in foreign currency exchange rates	(1,485)	(1,856)
Balances at end of period	$ 534,551	$ 466,812
Loss ratios as a percentage of title operating revenues:
Current year provisions	4.30%	4.50%
Total provisions	4.30%	4.60%