v3.26.1
FAIR VALUE MEASUREMENTS - Significant Valuation Input Sensitivity (Details)
$ in Thousands
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 354,007 $ 273,151    
Loans held for sale, at fair value 597,400 404,337 $ 333,629 $ 395,922
Residual interest securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities 34,787 40,166    
Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset 155,024 113,064    
Loans held for sale, at fair value $ 597,400 $ 404,337    
Level 3 | Discount rate        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.130 0.130    
Loans held for sale, measurement input 0.069 0.065    
Level 3 | CPR        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.128 0.132    
Loans held for sale, measurement input 0.170 0.180    
Level 3 | CDR        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.008 0.007    
Loans held for sale, measurement input 0.017 0.019    
Level 3 | Cost of Servicing        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.003 0.003    
Level 3 | Residual interest securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 34,787 $ 40,166    
Level 3 | Residual interest securities | Discount rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.264 0.258    
Level 3 | Residual interest securities | Discount rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.050 0.096    
Level 3 | Residual interest securities | Discount rate | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.131 0.157    
Level 3 | Residual interest securities | Discount rate | -2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 21,411      
Marketable securities, measurement input 0.033      
Level 3 | Residual interest securities | Discount rate | -1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 10,468      
Marketable securities, measurement input 0.016      
Level 3 | Residual interest securities | Discount rate | +1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 9,799      
Marketable securities, measurement input (0.015)      
Level 3 | Residual interest securities | Discount rate | +2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 19,212      
Marketable securities, measurement input (0.029)      
Level 3 | Residual interest securities | CPR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.208 0.208    
Level 3 | Residual interest securities | CPR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.162 0.162    
Level 3 | Residual interest securities | CPR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.188 0.188    
Level 3 | Residual interest securities | CPR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 50,736      
Marketable securities, measurement input 0.077      
Level 3 | Residual interest securities | CPR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 24,023      
Marketable securities, measurement input 0.037      
Level 3 | Residual interest securities | CPR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 21,478      
Marketable securities, measurement input (0.033)      
Level 3 | Residual interest securities | CPR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 41,029      
Marketable securities, measurement input (0.063)      
Level 3 | Residual interest securities | CDR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.024 0.024    
Level 3 | Residual interest securities | CDR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0 0    
Level 3 | Residual interest securities | CDR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities, measurement input 0.012 0.012    
Level 3 | Residual interest securities | CDR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 13,414      
Marketable securities, measurement input 0.021      
Level 3 | Residual interest securities | CDR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 6,714      
Marketable securities, measurement input 0.010      
Level 3 | Residual interest securities | CDR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 6,432      
Marketable securities, measurement input (0.010)      
Level 3 | Residual interest securities | CDR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 12,812      
Marketable securities, measurement input (0.020)      
Level 3 | HELOC loans        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 153,102 $ 111,211    
Loans held for sale, at fair value $ 537,159 $ 320,566    
Level 3 | HELOC loans | Discount rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.130 0.130    
Loans held for sale, measurement input 0.082 0.078    
Level 3 | HELOC loans | Discount rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.130 0.130    
Loans held for sale, measurement input 0.053 0.057    
Level 3 | HELOC loans | Discount rate | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.130 0.130    
Loans held for sale, measurement input 0.065 0.064    
Level 3 | HELOC loans | Discount rate | -2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 9,109      
Servicing assets, measurement input 0.063      
Loans held for sale, at fair value $ 12,914      
Loans held for sale, measurement input 0.025      
Level 3 | HELOC loans | Discount rate | -1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 4,425      
Servicing assets, measurement input 0.031      
Loans held for sale, at fair value $ 10,499      
Loans held for sale, measurement input 0.020      
Level 3 | HELOC loans | Discount rate | +1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 4,165      
Servicing assets, measurement input (0.029)      
Loans held for sale, at fair value $ 16,100      
Loans held for sale, measurement input (0.031)      
Level 3 | HELOC loans | Discount rate | +2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 8,100      
Servicing assets, measurement input (0.056)      
Loans held for sale, at fair value $ 32,163      
Loans held for sale, measurement input (0.062)      
Level 3 | HELOC loans | CPR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.376 0.331    
Loans held for sale, measurement input 0.518 0.474    
Level 3 | HELOC loans | CPR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0 0    
Loans held for sale, measurement input 0.014 0.011    
Level 3 | HELOC loans | CPR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.129 0.133    
Loans held for sale, measurement input 0.187 0.178    
Level 3 | HELOC loans | CPR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 8,590      
Servicing assets, measurement input 0.060      
Loans held for sale, at fair value $ 2,604      
Loans held for sale, measurement input 0.005      
Level 3 | HELOC loans | CPR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 4,151      
Servicing assets, measurement input 0.029      
Loans held for sale, at fair value $ 1,368      
Loans held for sale, measurement input 0.003      
Level 3 | HELOC loans | CPR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 3,906      
Servicing assets, measurement input (0.027)      
Loans held for sale, at fair value $ 1,402      
Loans held for sale, measurement input (0.003)      
Level 3 | HELOC loans | CPR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 7,581      
Servicing assets, measurement input (0.053)      
Loans held for sale, at fair value $ 2,789      
Loans held for sale, measurement input (0.005)      
Level 3 | HELOC loans | CDR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.054 0.048    
Loans held for sale, measurement input 0.945 0.940    
Level 3 | HELOC loans | CDR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0 0    
Loans held for sale, measurement input 0.004 0    
Level 3 | HELOC loans | CDR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.008 0.008    
Loans held for sale, measurement input 0.019 0.018    
Level 3 | HELOC loans | CDR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 0      
Servicing assets, measurement input 0      
Loans held for sale, at fair value $ 1,562      
Loans held for sale, measurement input 0.003      
Level 3 | HELOC loans | CDR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 0      
Servicing assets, measurement input 0      
Loans held for sale, at fair value $ 782      
Loans held for sale, measurement input 0.002      
Level 3 | HELOC loans | CDR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 0      
Servicing assets, measurement input 0      
Loans held for sale, at fair value $ 752      
Loans held for sale, measurement input (0.002)      
Level 3 | HELOC loans | CDR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 0      
Servicing assets, measurement input 0      
Loans held for sale, at fair value $ 1,508      
Loans held for sale, measurement input (0.003)      
Level 3 | HELOC loans | Cost of Servicing        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.003 0.003    
Level 3 | HELOC loans | Cost of Servicing | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 11,574      
Servicing assets, measurement input 0.080      
Level 3 | HELOC loans | Cost of Servicing | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 5,794      
Servicing assets, measurement input 0.040      
Level 3 | HELOC loans | Cost of Servicing | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 5,794      
Servicing assets, measurement input (0.040)      
Level 3 | HELOC loans | Cost of Servicing | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 11,574      
Servicing assets, measurement input (0.080)      
Level 3 | HELOC loans | Loss Severity | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0.998 0.991    
Level 3 | HELOC loans | Loss Severity | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0 0    
Level 3 | HELOC loans | Loss Severity | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0.252 0.254    
Level 3 | Mortgage loans        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset $ 1,922 $ 1,853    
Level 3 | Mortgage loans | Discount rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.105 0.105    
Level 3 | Mortgage loans | Discount rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.095 0.095    
Level 3 | Mortgage loans | Discount rate | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.103 0.103    
Level 3 | Mortgage loans | Discount rate | -2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ 200      
Servicing assets, measurement input 0.104      
Level 3 | Mortgage loans | Discount rate | -1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ 96      
Servicing assets, measurement input 0.050      
Level 3 | Mortgage loans | Discount rate | +1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ (86)      
Servicing assets, measurement input (0.045)      
Level 3 | Mortgage loans | Discount rate | +2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ (171)      
Servicing assets, measurement input (0.089)      
Level 3 | Mortgage loans | CPR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.086 0.082    
Level 3 | Mortgage loans | CPR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.035 0.035    
Level 3 | Mortgage loans | CPR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.043 0.053    
Level 3 | Mortgage loans | CPR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ 77      
Servicing assets, measurement input 0.040      
Level 3 | Mortgage loans | CPR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ 377      
Servicing assets, measurement input 0.196      
Level 3 | Mortgage loans | CPR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ (36)      
Servicing assets, measurement input (0.019)      
Level 3 | Mortgage loans | CPR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing asset, net $ (71)      
Servicing assets, measurement input (0.037)      
Level 3 | Mortgage loans | CDR | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.106 0.105    
Level 3 | Mortgage loans | CDR | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0 0    
Level 3 | Mortgage loans | CDR | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.003 0.004    
Level 3 | Mortgage loans | Cost of Servicing        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing assets, measurement input 0.003 0.003    
Level 3 | Personal loans        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 51,820 $ 79,113    
Level 3 | Personal loans | Discount rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0.115 0.115    
Level 3 | Personal loans | Discount rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0.089 0.089    
Level 3 | Personal loans | Discount rate | Weighted Average        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0.109 0.098    
Level 3 | Personal loans | Discount rate | -2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 332      
Loans held for sale, measurement input 0.006      
Level 3 | Personal loans | Discount rate | -1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 176      
Loans held for sale, measurement input 0.003      
Level 3 | Personal loans | Discount rate | +1%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 179      
Loans held for sale, measurement input (0.003)      
Level 3 | Personal loans | Discount rate | +2%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 356      
Loans held for sale, measurement input (0.007)      
Level 3 | Personal loans | CPR        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0 0    
Level 3 | Personal loans | CPR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CPR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CPR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CPR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CDR        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0 0    
Level 3 | Personal loans | CDR | -20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CDR | -10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CDR | +10%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | CDR | +20%        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, at fair value $ 0      
Loans held for sale, measurement input 0      
Level 3 | Personal loans | Loss Severity        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input   0    
Level 3 | Personal loans | Loss Severity | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loans held for sale, measurement input 0