Revenues from Contracts with Customers - Schedule of Revenues from Contracts with Customers and Our Other Sources of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue
Revenues from contracts with customers:	$ 653,533	$ 548,515	$ 1,235,949	$ 963,917
Revenues	755,351	629,871	1,433,599	1,133,851
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	31,499	25,815	60,971	54,532
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	17,963	15,446	36,264	34,123
Servicing fees and other
Disaggregation of Revenue
Other sources of revenue	52,356	40,095	100,415	81,279
Leasing and other commissions
Disaggregation of Revenue
Revenues from contracts with customers:	212,825	184,346	411,778	331,779
Revenues	212,825	184,346	411,778	331,779
Investment sales
Disaggregation of Revenue
Revenues from contracts with customers:	209,053	142,233	361,167	243,778
Mortgage brokerage and debt placement
Disaggregation of Revenue
Revenues from contracts with customers:	50,326	42,522	96,615	62,380
Management services
Disaggregation of Revenue
Revenues from contracts with customers:	$ 181,329	$ 179,414	$ 366,389	$ 325,980