Loans - Schedule of Loans Originated and Subsequently Sold (Details) - Loan Platform Business, Third-Party Loans - Personal loans - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] | ||||
| Cash | $ 3,108,877 | $ 2,370,668 | $ 6,015,994 | $ 3,917,253 |
| Servicing assets recognized | 21,427 | 17,707 | 41,662 | 28,633 |
| Repurchase liabilities recognized | (3,988) | (2,156) | (7,371) | (3,217) |
| Total consideration | 3,126,316 | 2,386,219 | 6,050,285 | 3,942,669 |
| Aggregate carrying amount and accrued interest of loans sold | 3,019,072 | 2,285,070 | 5,829,486 | 3,773,422 |
| Loan fees, net | 85,817 | 83,442 | 179,137 | 140,614 |
| Realized gain (loss) | 107,244 | 101,149 | 220,799 | 169,247 |
| Unpaid principal balance | $ 3,100,000 | $ 2,300,000 | $ 5,900,000 | $ 3,800,000 |