Capital markets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue
Mortgage brokerage and debt placement	$ 2,272,989	$ 2,072,839	$ 2,304,500
Total	2,738,502	2,470,368	2,705,527
Capital markets
Disaggregation of Revenue
Total	774,186	659,896	964,168
Investment sales
Disaggregation of Revenue
Other sources of revenue	417,684	381,276	606,416
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	100,171	82,082	109,926
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	91,645	69,604	74,573
Mortgage brokerage and debt placement
Disaggregation of Revenue
Mortgage brokerage and debt placement	$ 164,686	$ 126,934	$ 173,253