Balance Sheet Components - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Accrued payroll	$ 30,161	$ 21,825
Accrued expenses	28,099	23,506
Trailing fee liability (at fair value)	4,251	4,852
Beneficial interest liabilities (at fair value)	4,221	0
Other liabilities	2,668	12,795
Loan servicing liabilities (at fair value)	2,038	3,968
Total accrued expenses and other liabilities	$ 71,438	$ 66,946