v3.26.3
Securities - Schedule of Available for Sale Securities from Amortized Cost to Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 2,324,715 $ 2,027,088
Gains 28 21,695
Losses (158,702) (23,900)
Allowance for Credit Losses 0 0
Estimated Fair Value 2,166,041 2,024,883
Accrued interest receivable 9,900 8,100
U.S. Government agency and sponsored enterprise residential MBS    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 2,073,302 1,824,499
Gains 27 20,675
Losses (145,716) (20,664)
Allowance for Credit Losses 0 0
Estimated Fair Value 1,927,613 1,824,510
U.S. Treasury Securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 21,869 999
Gains 0 1
Losses (2,227) 0
Allowance for Credit Losses 0 0
Estimated Fair Value 19,642 1,000
U.S. Government agency and sponsored enterprise commercial MBS    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 148,075 153,746
Gains 0 1,016
Losses (9,684) (2,513)
Allowance for Credit Losses 0 0
Estimated Fair Value 138,391 152,249
U.S. Government agency and sponsored enterprise obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 79,737 46,112
Gains 1 3
Losses (824) (660)
Allowance for Credit Losses 0 0
Estimated Fair Value 78,914 45,455
Municipal Bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 1,732 1,732
Gains 0 0
Losses (251) (63)
Allowance for Credit Losses 0 0
Estimated Fair Value 1,481 1,669
U.S. Treasury Notes    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 21,900  
Estimated Fair Value 19,600  
Mortgage Backed Securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 1,700 1,700
Estimated Fair Value $ 1,500 $ 1,700