v3.26.3
Repurchase Agreements and Warehouse Facilities - Schedule of Borrowings Under Financing Arrangements and Associated Assets Pledged as Collateral (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Outstanding Repurchase Agreements and Warehouse Facilities $ 6,633,635 $ 6,154,086
Carrying Value of Repurchase Agreements and Warehouse Facilities 7,460,119 6,753,417
Fair Value of Collateral Pledged $ 4,939,908 $ 4,438,882
Weighted Average Months to Maturity 29 days 31 days
Single Family    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Fair Value of Collateral Pledged $ 94,600 $ 116,800
Residential Loans and Real Estate Owned    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Carrying Value of Repurchase Agreements and Warehouse Facilities 635,461 462,127
Fair Value of Collateral Pledged 761,400  
Residential loans held for sale    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Carrying Value of Repurchase Agreements and Warehouse Facilities 139,252 73,446
Fair Value of Collateral Pledged 147,500 78,000
Residential Loans    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Fair Value of Collateral Pledged   538,400
Residential Mortgage Loans    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Maximum Aggregate Uncommitted Principal or Line Amount 3,825,000 3,225,000
Outstanding Repurchase Agreements and Warehouse Facilities 826,775 599,392
Net Deferred Finance Costs (291) (61)
Carrying Value of Repurchase Agreements and Warehouse Facilities 826,484 599,331
Fair Value of Collateral Pledged $ 1,003,565 $ 733,202
Weighted Average Rate 5.78% 5.80%
Weighted Average Months to Maturity 6 years 3 months 10 days 5 years 10 months 9 days