Selling, general and administrative expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Selling, General and Administrative Expense [Abstract]
Salaries and benefits	$ 63,585	$ 56,992	$ 193,108	$ 171,073
Rent and occupancy	14,777	15,522	44,321	45,365
Share-based compensation	14,045	10,294	33,980	23,395
Office supplies and services	12,530	11,556	36,448	33,671
Professional fees	10,890	4,939	24,014	16,205
Sales and marketing	10,615	11,340	38,408	32,990
Insurance and compliance	2,604	2,314	7,553	6,988
Travel	1,250	1,687	5,385	5,259
Research and development	303	214	1,048	508
Other operating expense	428	3,654	1,309	5,234
Total selling, general and administrative expense	$ 131,027	$ 118,512	$ 385,574	$ 340,688