Estimated title losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balances at beginning of period	$ 549,614	$ 496,275
Provisions:
Current year	28,882	28,407
Previous policy years	339	366
Total provisions	29,221	28,773
Payments, net of recoveries:
Current year	(3,192)	(3,606)
Previous policy years	(17,070)	(12,933)
Total payments, net of recoveries	(20,262)	(16,539)
Effects of changes in foreign currency exchange rates	2,145	1,032
Balances at end of period	$ 560,718	$ 509,541
Loss ratios as a percentage of title operating revenues:
Current year provisions	4.00%	4.50%
Total provisions	4.00%	4.60%