Capital markets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue
Revenues from contracts with customers	$ 527,326	$ 476,741	$ 977,469	$ 919,141
Revenues	633,375	585,844	1,179,874	1,106,643
Capital markets
Disaggregation of Revenue
Revenues	162,040	141,573	292,806	256,774
Investment sales
Disaggregation of Revenue
Other sources of revenue	91,731	77,604	162,554	149,597
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	23,395	23,046	39,539	37,145
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	18,654	21,593	35,353	33,556
Mortgage brokerage and debt placement
Disaggregation of Revenue
Revenues from contracts with customers	$ 28,260	$ 19,330	$ 55,360	$ 36,476