v3.26.3
Securities - Schedule of Available for Sale Securities with Unrealized Losses (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
contract
Dec. 31, 2025
USD ($)
contract
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 422 49
Less Than 12 Months, Estimated Fair Value $ 1,766,417 $ 140,431
Less Than 12 Months, Unrealized Loss $ (112,202) $ (660)
12 Months or More, Number of Securities | contract 317 350
12 Months or More, Estimated Fair Value $ 393,742 $ 527,034
12 Months or More, Unrealized Loss (46,500) (23,240)
Total, Estimated Fair Value 2,160,159 667,465
Total, Unrealized Loss $ (158,702) $ (23,900)
U.S. Government agency and sponsored enterprise residential MBS    
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 386 40
Less Than 12 Months, Estimated Fair Value $ 1,594,672 $ 98,114
Less Than 12 Months, Unrealized Loss $ (104,636) $ (197)
12 Months or More, Number of Securities | contract 247 275
12 Months or More, Estimated Fair Value $ 329,723 $ 444,110
12 Months or More, Unrealized Loss (41,080) (20,467)
Total, Estimated Fair Value 1,924,395 542,224
Total, Unrealized Loss $ (145,716) $ (20,664)
U.S. Government agency and sponsored enterprise commercial MBS    
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 19 2
Less Than 12 Months, Estimated Fair Value $ 85,356 $ 8,900
Less Than 12 Months, Unrealized Loss $ (4,678) $ (56)
12 Months or More, Number of Securities | contract 27 30
12 Months or More, Estimated Fair Value $ 53,035 $ 69,498
12 Months or More, Unrealized Loss (5,006) (2,457)
Total, Estimated Fair Value 138,391 78,398
Total, Unrealized Loss $ (9,684) $ (2,513)
U.S. Government agency and sponsored enterprise obligations    
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 12 7
Less Than 12 Months, Estimated Fair Value $ 66,411 $ 33,417
Less Than 12 Months, Unrealized Loss $ (637) $ (407)
12 Months or More, Number of Securities | contract 41 42
12 Months or More, Estimated Fair Value $ 9,839 $ 11,757
12 Months or More, Unrealized Loss (187) (253)
Total, Estimated Fair Value 76,250 45,174
Total, Unrealized Loss $ (824) $ (660)
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 1 0
Less Than 12 Months, Estimated Fair Value $ 336 $ 0
Less Than 12 Months, Unrealized Loss $ (24) $ 0
12 Months or More, Number of Securities | contract 2 3
12 Months or More, Estimated Fair Value $ 1,145 $ 1,669
12 Months or More, Unrealized Loss (227) (63)
Total, Estimated Fair Value 1,481 1,669
Total, Unrealized Loss $ (251) $ (63)
U.S. Treasury Securities    
Debt Securities, Available-for-sale [Line Items]    
Less Than 12 Months, Number of Securities | contract 4  
Less Than 12 Months, Estimated Fair Value $ 19,642  
Less Than 12 Months, Unrealized Loss $ (2,227)  
12 Months or More, Number of Securities | contract 0  
12 Months or More, Estimated Fair Value $ 0  
12 Months or More, Unrealized Loss 0  
Total, Estimated Fair Value 19,642  
Total, Unrealized Loss $ (2,227)