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
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue
Revenues from contracts with customers:	$ 582,416	$ 415,403
Revenues	678,247	503,980
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	29,472	28,716
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	18,300	18,677
Servicing fees and other
Disaggregation of Revenue
Other sources of revenue	48,059	41,184
Leasing and other commissions
Disaggregation of Revenue
Revenues from contracts with customers:	198,952	147,433
Revenues	198,952	147,433
Leasing and other commissions
Disaggregation of Revenue
Revenues from contracts with customers:	152,113	101,545
Mortgage brokerage and debt placement
Disaggregation of Revenue
Revenues from contracts with customers:	46,290	19,858
Management services
Disaggregation of Revenue
Revenues from contracts with customers:	$ 185,061	$ 146,567