Balance Sheet Components - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Other Assets [Abstract]
Accrued expenses	$ 29,759	$ 28,099
Accrued payroll	13,905	30,161
Accounts payable	13,879	12,613
Beneficial interest liabilities (at fair value)	11,198	4,221
Trailing fee liability (at fair value)	4,242	4,251
Other liabilities	3,053	2,668
Loan servicing liabilities (at fair value)	1,223	2,038
Total accrued expenses and other liabilities	$ 77,259	$ 84,051