Segment information - Schedule of Selected Statement of Income Information Related to Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Revenues	$ 781,307	$ 611,984
Expenses
Amounts retained by agencies	276,142	221,377
Employee costs	221,098	185,811
Other operating expenses	217,517	160,911
Title losses and related claims	18,442	17,702
Depreciation and amortization	16,855	15,322
Interest	7,628	4,961
Total expenses	757,682	606,084
Income before taxes and noncontrolling interests	23,625	5,900
Operating Segments | Title
Segment Reporting Information [Line Items]
Revenues	620,090	514,874
Expenses
Amounts retained by agencies	276,142	221,377
Employee costs	195,366	168,487
Other operating expenses	96,478	86,505
Title losses and related claims	18,442	17,702
Depreciation and amortization	8,239	8,614
Interest	456	422
Total expenses	595,123	503,107
Income before taxes and noncontrolling interests	24,967	11,767
Operating Segments | Real estate solutions and abstract fees
Segment Reporting Information [Line Items]
Revenues	161,400	97,112
Expenses
Employee costs	22,360	13,736
Other operating expenses	119,653	72,943
Depreciation and amortization	8,358	6,372
Interest	4	2
Total expenses	150,375	93,053
Income before taxes and noncontrolling interests	11,025	4,059
Operating Segments | Corporate:
Segment Reporting Information [Line Items]
Revenues	(183)	(2)
Expenses
Employee costs	3,372	3,588
Other operating expenses	1,386	1,463
Depreciation and amortization	258	336
Interest	7,168	4,537
Total expenses	12,184	9,924
Income before taxes and noncontrolling interests	$ (12,367)	$ (9,926)