v3.26.1
Commitments and Contingencies (Details)
 3 Months Ended 6 Months Ended
Mar. 23, 2026
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Commitments And Contingencies [Line Items]            
Fee deposits, percentage (as a percent) 0.05     0.05    
Fee deposits refund obligation, issued   $ 6,400,000 $ 3,800,000 $ 11,600,000 $ 6,600,000  
Fee deposits refunds   18,000,000.0   18,000,000.0   $ 17,200,000
Purchase commitment of borrower loans   32,600,000   32,600,000    
Maximum potential future payments   4,100,000,000   4,100,000,000    
Accrued repurchase and indemnification obligation   300,000   300,000   300,000
Prosper Funding LLC            
Commitments And Contingencies [Line Items]            
Designated amount for loans (less than), through February 2027   100,000   100,000    
Minimum fee, 2026   600,000   600,000    
Minimum fee, 2027   100,000   100,000    
Minimum liquidity covenant   15,000,000.0   $ 15,000,000.0    
Fee deposits, percentage (as a percent)       0.05    
Fee deposits refunds   18,000,000.0   $ 18,000,000.0   17,200,000
Purchase commitment of borrower loans   32,600,000   32,600,000    
Maximum potential future payments   4,200,000,000   4,200,000,000    
Accrued repurchase and indemnification obligation   $ 300,000   $ 300,000   $ 300,000