Derivatives - Summary of Gains Losses on Derivative Contracts Included in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Rate lock commitments | Compensation and employee benefits
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	$ (1,100)	$ 1,100	$ 200	$ 2,200
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	(13,067)	(2,774)	4,133	(2,042)
Not Designated as Hedging Instrument | Nasdaq Forwards | Other income (loss), net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	0	(6,802)	0	(12,404)
Not Designated as Hedging Instrument | Rate lock commitments | Commercial mortgage origination, net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	(2,198)	15,149	(5,167)	19,843
Not Designated as Hedging Instrument | Rate lock commitments | Compensation and employee benefits
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	1,123	(1,060)	(224)	(2,177)
Not Designated as Hedging Instrument | Forward sale contracts | Commercial mortgage origination, net
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income for derivatives	$ (11,992)	$ (10,061)	$ 9,524	$ (7,304)