Balance Sheet Components - Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Accrued expenses	$ 19,600	$ 23,506
Accrued payroll	12,824	21,825
Loan servicing liabilities (at fair value)	3,142	3,968
Trailing fee liability (at fair value)	4,449	4,852
Other liabilities	6,976	12,795
Total accrued expenses and other liabilities	$ 46,991	$ 66,946