v3.26.1
Short-Term Debt - Mortgage Loan Participation and Sale Agreement (Details)
3 Months Ended
Mar. 31, 2026
USD ($)
item
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Carrying value:      
Loans held for sale $ 9,954,495,000   $ 9,123,410,000
Mortgage loan participation and sale agreement secured by mortgage loan participation certificates $ 691,081,000   696,618,000
Mortgage Loan Participation and Sale Agreement member      
Short-Term Debt [Line Items]      
Number of borrowing facilities secured by loans held for sale | item 2    
During the quarter:      
Short-Term Debt, Average Outstanding Amount $ 321,732,000 $ 261,045,000  
Weighted-average interest rate 4.99% 5.64%  
Total interest expense $ 4,194,000 $ 3,804,000  
Carrying value:      
Amortization of debt issuance costs 234,000 172,000  
Mortgage Loan Participation and Sale Agreement member | Maximum      
Carrying value:      
Mortgage loan participation and sale agreement secured by mortgage loan participation certificates 699,793,000 511,846,000  
Note Payable      
Carrying value:      
Unamortized debt issuance costs (3,675,000)   (3,979,000)
Amortization of debt issuance costs 305,000 $ 513,000  
Mortgage Loan Participation and Sale Agreement member      
Carrying value:      
Unpaid principal balance of mortgage loan participation and sale agreement secured by mortgage loan participation certificates 691,316,000   697,087,000
Unamortized debt issuance costs (235,000)   (469,000)
Mortgage loan participation and sale agreement secured by mortgage loan participation certificates $ 691,081,000   $ 696,618,000
Weighted average interest rate 4.91%   4.94%
Asset Pledged as Collateral without Right      
Carrying value:      
Loans held for sale $ 9,799,780,000   $ 8,983,503,000
Asset Pledged as Collateral without Right | Mortgage Loan Participation and Sale Agreement member      
Carrying value:      
Loans held for sale $ 732,523,000   $ 738,247,000