v3.26.3
Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Property, Plant, and Equipment [Line Items]    
Property and equipment $ 133,822 $ 130,759
Less: Accumulated depreciation and amortization (89,084) (85,662)
Total Property and Equipment, Net 44,738 45,097
Prosper Funding LLC    
Property, Plant, and Equipment [Line Items]    
Less: accumulated depreciation and amortization (49,381) (41,370)
Total Property and Equipment, Net 19,531 21,983
Internal-use software and website development costs    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross 85,694 87,842
Internal-use software and website development costs | Prosper Funding LLC    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross 68,912 63,353
Operating lease right-of-use assets    
Property, Plant, and Equipment [Line Items]    
Operating lease, right-of-use asset $ 22,690 $ 22,690
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Total Property and Equipment, Net Total Property and Equipment, Net
Computer equipment    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 5,188 $ 4,805
Leasehold improvements    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross 7,184 7,183
Office equipment and furniture    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross 3,077 3,067
Assets not yet placed in service    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 9,989 $ 5,172