v3.26.1
Servicing Rights - Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Minimum | SBA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 4.40% 6.00%
Forward default rate (in percent) 0.00% 0.00%
Discount rate (in percent) 7.40% 7.40%
Servicing expense (in percent) 0.40% 0.40%
Minimum | Multi-family    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 0.00% 0.00%
Forward default rate (in percent) 0.00% 0.00%
Discount rate (in percent) 5.20% 5.20%
Servicing expense (in percent) 0.00% 0.00%
Minimum | USDA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 6.00% 5.50%
Discount rate (in percent) 3.90% 4.90%
Servicing expense (in percent) 0.10% 0.10%
Minimum | Small business loans    
Servicing Asset at Amortized Cost [Line Items]    
Discount rate (in percent) 6.00% 6.00%
Servicing expense (in percent) 0.50% 0.50%
Maximum | SBA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 21.60% 21.60%
Forward default rate (in percent) 3.80% 3.80%
Discount rate (in percent) 21.10% 19.00%
Servicing expense (in percent) 0.40% 0.40%
Maximum | Multi-family    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 7.60% 7.60%
Forward default rate (in percent) 0.20% 0.20%
Discount rate (in percent) 5.20% 5.20%
Servicing expense (in percent) 0.80% 0.80%
Maximum | USDA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 17.70% 16.90%
Discount rate (in percent) 5.10% 6.00%
Servicing expense (in percent) 0.30% 0.30%
Maximum | Small business loans    
Servicing Asset at Amortized Cost [Line Items]    
Discount rate (in percent) 6.00% 6.00%
Servicing expense (in percent) 0.50% 0.50%
Weighted Average | SBA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 9.40% 9.80%
Forward default rate (in percent) 1.20% 1.30%
Discount rate (in percent) 12.70% 11.90%
Servicing expense (in percent) 0.40% 0.40%
Weighted Average | Multi-family    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 2.40% 7.30%
Forward default rate (in percent) 0.10% 0.10%
Discount rate (in percent) 5.20% 5.20%
Servicing expense (in percent) 0.10% 0.10%
Weighted Average | USDA    
Servicing Asset at Amortized Cost [Line Items]    
Forward prepayment rate (in percent) 12.50% 12.10%
Discount rate (in percent) 4.90% 5.80%
Servicing expense (in percent) 0.20% 0.20%
Weighted Average | Small business loans    
Servicing Asset at Amortized Cost [Line Items]    
Discount rate (in percent) 6.00% 6.00%
Servicing expense (in percent) 0.50% 0.50%