PROPERTY AND EQUIPMENT, NET - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Property, Plant and Equipment [Line Items] | |||
| Depreciation and Amortization | $ 12,128 | $ 10,816 | $ 10,989 |
| Internal-use software and website development costs | |||
| Property, Plant and Equipment [Line Items] | |||
| Capitalized internal-use software and website development costs | 14,500 | 15,900 | 14,900 |
| Prosper Funding LLC | |||
| Property, Plant and Equipment [Line Items] | |||
| Depreciation and Amortization | 7,955 | 6,765 | 6,268 |
| Prosper Funding LLC | Internal-use software and website development costs | |||
| Property, Plant and Equipment [Line Items] | |||
| Capitalized internal-use software and website development costs | 17,400 | 7,700 | 7,900 |
| Property and Equipment | |||
| Property, Plant and Equipment [Line Items] | |||
| Depreciation and Amortization | $ 12,100 | $ 10,700 | $ 10,900 |