v3.26.1
Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage loans at fair value $ 10,991,101 $ 9,932,729    
Investment securities at fair value, pledged 98,491 100,512    
Total assets 15,805,937 14,144,589    
Total liabilities 337,817 26,574    
IRLCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 16,456 27,780    
Derivative liability 35,280 6,475    
FLSCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 108,034 9,787    
Derivative liability 14,442 20,099    
Mortgage servicing rights        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage servicing rights 4,591,855 4,073,781 $ 3,321,457 $ 3,969,881
Other interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative liability 288,095      
Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage loans at fair value 0 0    
Investment securities at fair value, pledged 0 0    
Total assets 0 0    
Total liabilities 239,882 0    
Level 1 | IRLCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 0 0    
Derivative liability 0 0    
Level 1 | FLSCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 0 0    
Derivative liability 0 0    
Level 1 | Mortgage servicing rights        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage servicing rights 0 0    
Level 1 | Other interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative liability 239,882      
Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage loans at fair value 10,991,101 9,932,729    
Investment securities at fair value, pledged 98,491 100,512    
Total assets 11,197,626 10,043,028    
Total liabilities 62,655 20,099    
Level 2 | IRLCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 0 0    
Derivative liability 0 0    
Level 2 | FLSCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 108,034 9,787    
Derivative liability 14,442 20,099    
Level 2 | Mortgage servicing rights        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage servicing rights 0 0    
Level 2 | Other interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative liability 48,213      
Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage loans at fair value 0 0    
Investment securities at fair value, pledged 0 0    
Total assets 4,608,311 4,101,561    
Total liabilities 35,280 6,475    
Level 3 | IRLCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 16,456 27,780    
Derivative liability 35,280 6,475    
Level 3 | FLSCs        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative asset 0 0    
Derivative liability 0 0    
Level 3 | Mortgage servicing rights        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mortgage servicing rights 4,591,855 $ 4,073,781    
Level 3 | Other interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative liability $ 0