v3.25.3
FAIR VALUE MEASUREMENTS - Valuation Assumptions (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
loan
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
loan
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Real estate owned ("REO") $ 6,210   $ 6,210      
Amortized cost 7,302,415   7,941,393      
Loans held for sale, carrying value 467,277   1,285,819      
Loans held for sale, fair value 467,277   1,285,819      
Reserves related to impaired loans 101,913 $ 37,560 32,302 $ 29,300 $ 29,295 $ 29,205
Mortgage servicing rights, valuation allowance 0   0      
Substandard            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Amortized cost 222,572   172,064      
Collateral Dependent Loans            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Amortized cost 51,716   27,090      
Reserves related to impaired loans 18,335   697      
Maximum            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Reserves related to impaired loans 101,900          
Fair Value Measurement Level 3            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loans held for sale, fair value $ 467,277   $ 1,285,819      
Percentage of principal balance loans held for sale 89.70%   97.40%      
Fair Value Measurement Level 3 | Substandard            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Percentage of principal balance loans held for sale 10.30%   2.60%      
Number of loans held for sale | loan 20   17      
Fair Value Measurement Level 3 | Collateral Dependent Loans            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Amortized cost $ 51,700   $ 27,000      
Fair Value Measurement Level 3 | Prepayment Rate | Financing Receivable With Fixed Interest Rate [Member]            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loan, held-for-sale, measurement input 0.05   0.05      
Fair Value Measurement Level 3 | Prepayment Rate | Financing Receivable With Floating Interest Rate [Member]            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loan, held-for-sale, measurement input 0.20   0.15      
Fair Value Measurement Level 3 | Prepayment Rate | Beneficial interests in FHLMC securitization            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Alternative investment measurement input 0.20   0.20      
Fair Value Measurement Level 3 | Prepayment Rate | Minimum | Mortgage Servicing Rights.            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Alternative investment measurement input 0.20          
Fair Value Measurement Level 3 | Prepayment Rate | Maximum | Mortgage Servicing Rights.            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Alternative investment measurement input 0.30          
Fair Value Measurement Level 3 | Discount Rate | Mortgage Servicing Rights.            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Alternative investment measurement input 0.10          
Fair Value Measurement Level 3 | Discount Rate | Beneficial interests in FHLMC securitization            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Alternative investment measurement input 0.0583   0.0687      
Fair Value Measurement Level 3 | Discount Rate | Minimum            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loan, held-for-sale, measurement input 0.024   0.021      
Fair Value Measurement Level 3 | Discount Rate | Maximum            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loan, held-for-sale, measurement input 0.056   0.0625      
Fair Value Measurement Level 3 | Expected loss assumption rate            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis            
Loan, held-for-sale, measurement input 0.0005   0.0005