v3.26.1
Related Party Transactions - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended 12 Months Ended
Apr. 02, 2025
USD ($)
Mar. 10, 2023
USD ($)
tranche
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
May 31, 2025
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Oct. 23, 2024
USD ($)
$ / shares
shares
Apr. 26, 2024
USD ($)
Dec. 31, 2023
$ / shares
shares
Jun. 16, 2023
USD ($)
Sep. 14, 2022
USD ($)
Related Party Transaction [Line Items]                      
Warrants issued (in shares) | shares                 4,193,453    
Warrants issued, exercise price (in USD per share) | $ / shares     $ 0.01   $ 0.01 $ 0.01     $ 0.01    
Issuance of common stock upon exercise of warrants (in shares) | shares     94,413 6,363,671              
Facility Amount     $ 1,189,091   $ 1,189,091            
Asset-backed borrowings at amortized cost     2,088,453   2,088,453 $ 2,192,649          
Corporate financing     119,891   119,891 $ 143,663          
Personal Loans                      
Related Party Transaction [Line Items]                      
Loan origination commitment, next twelve months, maximum amount                   $ 300,000  
Oportun PLW III Trust                      
Related Party Transaction [Line Items]                      
Facility Amount     $ 187,500   $ 187,500            
Asset-Backed Notes | Senior Secured Term Loans                      
Related Party Transaction [Line Items]                      
Original amount             $ 235,000        
Credit Facility | Oportun PLW III Trust                      
Related Party Transaction [Line Items]                      
Debt term 2 years                    
Facility Amount $ 187,500                    
Beneficial Owner                      
Related Party Transaction [Line Items]                      
Warrants issued (in shares) | shares   4,193,453         2,426,503        
Warrants issued, exercise price (in USD per share) | $ / shares   $ 0.01         $ 0.01        
Ownership percentage in stocks (greater than)     10.00%   10.00%            
Issuance of common stock upon exercise of warrants (in shares) | shares         94,413 3,937,168          
Warrants outstanding (in shares) | shares     2,588,375   2,588,375 2,682,788          
Asset-backed borrowings at amortized cost     $ 65,800   $ 65,800 $ 116,900          
Corporate financing     119,900   119,900 71,800          
Secured financing     13,200   13,200 7,200          
Beneficial Owner | Personal Loans                      
Related Party Transaction [Line Items]                      
Loan origination commitment, maximum amount               $ 370,900      
Financing receivable, transfers         0 0          
Beneficial Owner | New Corporate Financing Facility                      
Related Party Transaction [Line Items]                      
Proceeds from issuance of debt   $ 75,000                  
Number of tranches | tranche   4                  
Beneficial Owner | Term Loan | Senior Secured Term Loans                      
Related Party Transaction [Line Items]                      
Original amount                     $ 150,000
Beneficial Owner | Asset-Backed Notes                      
Related Party Transaction [Line Items]                      
Loans receivable at fair value     57,400   57,400 103,500          
Beneficial Owner | Asset-Backed Notes | Senior Secured Term Loans                      
Related Party Transaction [Line Items]                      
Original amount             $ 235,000        
Beneficial Owner | Warehouse Agreement Borrowings                      
Related Party Transaction [Line Items]                      
Loans receivable at fair value     $ 14,900   $ 14,900 $ 8,100