Segment information - Selected Statement of Operations and Income (Loss) Information Related to Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenues	$ 716,399	$ 836,727	$ 2,413,387	$ 2,344,121
Depreciation and amortization	14,067	9,144	42,103	22,394
Loss before taxes	45,511	116,446	211,901	319,904
Title segment
Segment Reporting Information [Line Items]
Revenues	646,607	772,246	2,135,000	2,157,949
Depreciation and amortization	7,467	4,556	21,098	13,579
Loss before taxes	51,837	119,147	228,212	321,907
Real estate solutions and abstract fees
Segment Reporting Information [Line Items]
Revenues	69,738	64,425	241,993	178,549
Depreciation and amortization	6,204	4,376	19,381	8,155
Loss before taxes	3,364	2,791	16,249	7,655
Corporate and Other
Segment Reporting Information [Line Items]
Revenues	54	56	36,394	7,623
Depreciation and amortization	396	212	1,624	660
Loss before taxes	$ (9,690)	$ (5,492)	$ (32,560)	$ (9,658)