Derivatives - Summary of Gains Losses on Derivative Contracts Included in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Rate lock commitments | Compensation and employee benefits
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	$ 1,300	$ 1,100
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	17,200	732
Not Designated as Hedging Instrument | Nasdaq Forwards | Other income (loss), net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	0	(5,602)
Not Designated as Hedging Instrument | Rate lock commitments | Commercial mortgage origination, net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	(2,969)	4,694
Not Designated as Hedging Instrument | Rate lock commitments | Compensation and employee benefits
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	(1,347)	(1,117)
Not Designated as Hedging Instrument | Forward sale contracts | Commercial mortgage origination, net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	$ 21,516	$ 2,757