v3.25.4
FAIR VALUE MEASUREMENTS - Significant Valuation Input Sensitivity (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 239,694 $ 163,489   $ 37,066  
Loan, Held-for-Sale, Fair Value 389,032 395,922 $ 468,142 255,516 $ 245,890
Residual interest securities          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value 38,308 34,506   11,952  
Level 3          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value 100,000 88,497   55,860  
Loan, Held-for-Sale, Fair Value $ 389,032 $ 369,983   $ 255,516  
Level 3 | Discount Rate          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.129 0.129   0.129  
Loans Held For Sale, measurement input 0.055 0.076   0.105  
Level 3 | CPR          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.135 0.142   0.142  
Loans Held For Sale, measurement input 0.131 0.137   0.163  
Level 3 | CDR          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.007 0.007   0.011  
Loans Held For Sale, measurement input 0.014 0.017   0.016  
Level 3 | Servicing Rate          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.003 0.002   0.001  
Loans Held For Sale, measurement input   0      
Level 3 | Loss Severity          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input       0.502  
Level 3 | Residual interest securities          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 38,308 $ 34,506   $ 11,952  
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 0.115 0.145   0.210  
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 0.183 0.197   0.212  
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 0.246 0.240   0.213  
Level 3 | Residual interest securities | Discount Rate | -2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 780 $ 1,599      
Marketable Securities, measurement input 0.039 0.046      
Level 3 | Residual interest securities | Discount Rate | -1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 380 $ 699      
Marketable Securities, measurement input 0.019 0.020      
Level 3 | Residual interest securities | Discount Rate | +1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 360 $ 1,163      
Marketable Securities, measurement input (0.018) (0.034)      
Level 3 | Residual interest securities | Discount Rate | +2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 703 $ 2,124      
Marketable Securities, measurement input (0.035) (0.062)      
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 0.152   0.136  
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 0.177   0.167  
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 0.201   0.300  
Level 3 | Residual interest securities | CPR | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 1,001 $ (3,824)      
Marketable Securities, measurement input 0.050 (0.111)      
Level 3 | Residual interest securities | CPR | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 513 $ (2,065)      
Marketable Securities, measurement input 0.026 (0.060)      
Level 3 | Residual interest securities | CPR | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 464 $ (1,912)      
Marketable Securities, measurement input (0.023) 0.055      
Level 3 | Residual interest securities | CPR | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 884 $ (4,160)      
Marketable Securities, measurement input (0.044) 0.121      
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 0.015   0.005  
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 0.016   0.013  
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 0.017   0.489  
Level 3 | Residual interest securities | CDR | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 274 $ 1,049      
Marketable Securities, measurement input 0.014 0.030      
Level 3 | Residual interest securities | CDR | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 136 $ 424      
Marketable Securities, measurement input 0.007 0.012      
Level 3 | Residual interest securities | CDR | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 135 $ 723      
Marketable Securities, measurement input (0.007) (0.021)      
Level 3 | Residual interest securities | CDR | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Marketable Securities, Fair Value $ 269 $ 1,263      
Marketable Securities, measurement input (0.014) (0.037)      
Level 3 | HELOC loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 98,120 $ 86,465   $ 53,645  
Loan, Held-for-Sale, Fair Value $ 323,184 $ 366,154   $ 244,670  
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   0.120  
Loans Held For Sale, measurement input 0.049 0.064   0.076  
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   0.130  
Loans Held For Sale, measurement input 0.065 0.076   0.106  
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   0.140  
Loans Held For Sale, measurement input 0.089 0.101   0.177  
Level 3 | HELOC loans | Discount Rate | -2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 5,920 $ 5,510      
Servicing Assets, measurement Input 0.062 0.063      
Loan, Held-for-Sale, Fair Value $ 16,052 $ 7,804      
Loans Held For Sale, measurement input 0.034 0.023      
Level 3 | HELOC loans | Discount Rate | -1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 2,874 $ 2,668      
Servicing Assets, measurement Input 0.030 0.030      
Loan, Held-for-Sale, Fair Value $ 10,890 $ 6,025      
Loans Held For Sale, measurement input 0.023 0.018      
Level 3 | HELOC loans | Discount Rate | +1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 2,702 $ 2,514      
Servicing Assets, measurement Input (0.028) (0.029)      
Loan, Held-for-Sale, Fair Value $ 14,240 $ 10,088      
Loans Held For Sale, measurement input (0.030) (0.030)      
Level 3 | HELOC loans | Discount Rate | +2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 5,261 $ 4,880      
Servicing Assets, measurement Input (0.055) (0.055)      
Loan, Held-for-Sale, Fair Value $ 29,376 $ 21,523      
Loans Held For Sale, measurement input (0.062) (0.064)      
Level 3 | HELOC loans | CPR | Minimum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0 0.010   0.100  
Loans Held For Sale, measurement input 0.026 0.013   0.004  
Level 3 | HELOC loans | CPR | Weighted average          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.137 0.144   0.146  
Loans Held For Sale, measurement input 0.156 0.136   0.160  
Level 3 | HELOC loans | CPR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.325 0.330   0.194  
Loans Held For Sale, measurement input 0.396 0.324   0.210  
Level 3 | HELOC loans | CPR | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 6,044 $ 5,642      
Servicing Assets, measurement Input 0.063 0.064      
Loan, Held-for-Sale, Fair Value $ 815 $ 616      
Loans Held For Sale, measurement input 0.002 0.002      
Level 3 | HELOC loans | CPR | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 2,922 $ 2,721      
Servicing Assets, measurement Input 0.031 0.031      
Loan, Held-for-Sale, Fair Value $ 488 $ 336      
Loans Held For Sale, measurement input 0.001 0.001      
Level 3 | HELOC loans | CPR | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 2,740 $ 2,540      
Servicing Assets, measurement Input (0.029) (0.029)      
Loan, Held-for-Sale, Fair Value $ 544 $ 351      
Loans Held For Sale, measurement input (0.001) (0.001)      
Level 3 | HELOC loans | CPR | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 5,309 $ 4,924      
Servicing Assets, measurement Input (0.056) (0.056)      
Loan, Held-for-Sale, Fair Value $ 1,245 $ 732      
Loans Held For Sale, measurement input (0.003) (0.002)      
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   0.003  
Loans Held For Sale, measurement input 0 0.015   0.005  
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 0.007   0.011  
Loans Held For Sale, measurement input 0.016 0.016   0.013  
Level 3 | HELOC loans | CDR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.049 0.044   0.023  
Loans Held For Sale, measurement input 0.943 0.017   0.489  
Level 3 | HELOC loans | CDR | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 0        
Servicing Assets, measurement Input 0        
Loan, Held-for-Sale, Fair Value $ 1,599 $ 1,100      
Loans Held For Sale, measurement input 0.003 0.003      
Level 3 | HELOC loans | CDR | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 0        
Servicing Assets, measurement Input 0        
Loan, Held-for-Sale, Fair Value $ 807 $ 560      
Loans Held For Sale, measurement input 0.002 0.002      
Level 3 | HELOC loans | CDR | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 0        
Servicing Assets, measurement Input 0        
Loan, Held-for-Sale, Fair Value $ 819 $ 570      
Loans Held For Sale, measurement input (0.002) (0.002)      
Level 3 | HELOC loans | CDR | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 0        
Servicing Assets, measurement Input 0        
Loan, Held-for-Sale, Fair Value $ 1,628 $ 1,100      
Loans Held For Sale, measurement input (0.004) (0.003)      
Level 3 | HELOC loans | Servicing Rate          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.003 0.002   0.001  
Level 3 | HELOC loans | Servicing Rate | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 8,002 $ 6,020      
Servicing Assets, measurement Input 0.084 0.068      
Level 3 | HELOC loans | Servicing Rate | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 4,001 $ 3,011      
Servicing Assets, measurement Input 0.042 0.034      
Level 3 | HELOC loans | Servicing Rate | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 4,001 $ 3,006      
Servicing Assets, measurement Input (0.042) (0.034)      
Level 3 | HELOC loans | Servicing Rate | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 8,002 $ 6,015      
Servicing Assets, measurement Input (0.084) (0.068)      
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 0.166   0.396  
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 0.284 0.324   0.484  
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 0.976 0.442   0.581  
Level 3 | Mortgage loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 1,880 $ 2,032   $ 2,215  
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 0.100   0.090  
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 0.108   0.100  
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 0.110   0.110  
Level 3 | Mortgage loans | Discount Rate | -2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 238 $ 202      
Servicing Assets, measurement Input 0.126 0.099      
Level 3 | Mortgage loans | Discount Rate | -1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 114 $ 97      
Servicing Assets, measurement Input 0.061 0.048      
Level 3 | Mortgage loans | Discount Rate | +1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 105 $ 89      
Servicing Assets, measurement Input (0.056) (0.044)      
Level 3 | Mortgage loans | Discount Rate | +2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 202 $ 171      
Servicing Assets, measurement Input (0.108) (0.084)      
Level 3 | Mortgage loans | CPR | Minimum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.036 0.039   0.042  
Level 3 | Mortgage loans | CPR | Weighted average          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.053 0.057   0.050  
Level 3 | Mortgage loans | CPR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.080 0.082   0.074  
Level 3 | Mortgage loans | CPR | -20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 125 $ 114      
Servicing Assets, measurement Input 0.067 0.056      
Level 3 | Mortgage loans | CPR | -10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 61 $ 56      
Servicing Assets, measurement Input 0.033 0.027      
Level 3 | Mortgage loans | CPR | +10%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 59 $ 53      
Servicing Assets, measurement Input (0.031) (0.026)      
Level 3 | Mortgage loans | CPR | +20%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, Fair Value $ 115 $ 105      
Servicing Assets, measurement Input (0.061) (0.051)      
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   0.001  
Level 3 | Mortgage loans | CDR | Weighted average          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.004 0.002   0.002  
Level 3 | Mortgage loans | CDR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0.011 0.010   0.005  
Level 3 | Mortgage loans | Servicing Rate          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Servicing Assets, measurement Input 0 0      
Level 3 | Personal loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loan, Held-for-Sale, Fair Value $ 62,935        
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        
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 0.102        
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        
Level 3 | Personal loans | Discount Rate | -2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loan, Held-for-Sale, Fair Value $ 62,297        
Loans Held For Sale, measurement input 0.007        
Level 3 | Personal loans | Discount Rate | -1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loan, Held-for-Sale, Fair Value $ 62,155        
Loans Held For Sale, measurement input 0.005        
Level 3 | Personal loans | Discount Rate | +1%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loan, Held-for-Sale, Fair Value $ 61,446        
Loans Held For Sale, measurement input (0.007)        
Level 3 | Personal loans | Discount Rate | +2%          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loan, Held-for-Sale, Fair Value $ 61,042        
Loans Held For Sale, measurement input (0.013)        
Level 3 | Personal loans | CPR | Minimum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input 0        
Level 3 | Personal loans | CPR | Weighted average          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input 0        
Level 3 | Personal loans | CPR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, Fair Value $ 0        
Loans Held For Sale, measurement input 0        
Level 3 | Personal loans | CDR | Minimum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input 0        
Level 3 | Personal loans | CDR | Weighted average          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input 0        
Level 3 | Personal loans | CDR | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, 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]          
Loan, Held-for-Sale, Fair Value $ 0        
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        
Level 3 | Personal 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        
Level 3 | Personal loans | Loss Severity | Maximum          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans Held For Sale, measurement input 0