v3.26.1
Segment Information - Schedule of Reconciliation of Total Contribution Profit to Net Loss Before Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Sales and marketing, net of borrower acquisition costs $ (104,455) $ (58,970)
Customer operations, net of borrower verification and servicing costs (55,095) (40,501)
Engineering and product development (80,112) (57,838)
General, administrative, and other (76,070) (60,558)
Interest income, interest expense, and fair value adjustments, net 31,151 27,896
Other income, net 956 2,078
Net loss before income taxes (6,562) (2,418)
Personal Lending    
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Contribution Profit: Personal Lending 148,434 107,712
Borrower acquisition costs 80,379 45,141
Borrower verification and servicing costs 36,581 29,274
Personal Lending | Operating Segments    
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Contribution Profit: Personal Lending 148,434 107,712
Other Contribution Profit/(Loss) (11,160) (5,340)
Sales and marketing, net of borrower acquisition costs (12,198) (10,408)
Customer operations, net of borrower verification and servicing costs (7,563) (5,960)
Engineering and product development (80,112) (57,838)
General, administrative, and other (76,070) (60,558)
Interest income, interest expense, and fair value adjustments, net 31,151 27,896
Other income, net 956 2,078
Net loss before income taxes (6,562) (2,418)
Borrower acquisition costs 92,300 48,600
Borrower verification and servicing costs $ 47,500 $ 34,500