Estimated title losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balances at beginning of period	$ 459,053	$ 461,560
Provisions:
Current year	68,063	54,670
Previous policy years	537	863
Total provisions	68,600	55,533
Payments, net of recoveries:
Current year	(9,595)	(11,424)
Previous policy years	(49,390)	(55,375)
Total payments, net of recoveries	(58,985)	(66,799)
Effects of changes in foreign currency exchange rates	(1,856)	2,067
Balances at end of period	$ 466,812	$ 452,361
Loss ratios as a percentage of title operating revenues:
Current year provisions	4.50%	4.10%
Total provisions	4.60%	4.20%