v3.25.2
Debt Securities - Debt Securities in an Unrealized Loss Position (Details)
$ in Thousands
Jun. 30, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Available-for-sale    
Number of Securities | security 655 662
Less than 12 Months, Fair Value $ 71,706 $ 57,410
Less than 12 Months, Unrealized Loss (1,686) (1,351)
12 Months or More, Fair Value 3,885,507 4,165,269
12 Months or More, Unrealized Loss (317,969) (409,981)
Total, Fair Value 3,957,213 4,222,679
Total, Unrealized Loss $ (319,655) $ (411,332)
U.S. government and federal agency    
Available-for-sale    
Number of Securities | security 43 55
Less than 12 Months, Fair Value $ 2,280 $ 3,756
Less than 12 Months, Unrealized Loss (26) (34)
12 Months or More, Fair Value 420,119 463,151
12 Months or More, Unrealized Loss (8,704) (15,620)
Total, Fair Value 422,399 466,907
Total, Unrealized Loss $ (8,730) $ (15,654)
U.S. government sponsored enterprises    
Available-for-sale    
Number of Securities | security 14 14
Less than 12 Months, Fair Value $ 0 $ 0
Less than 12 Months, Unrealized Loss 0 0
12 Months or More, Fair Value 315,982 310,154
12 Months or More, Unrealized Loss (8,811) (13,700)
Total, Fair Value 315,982 310,154
Total, Unrealized Loss $ (8,811) $ (13,700)
State and local governments    
Available-for-sale    
Number of Securities | security 52 50
Less than 12 Months, Fair Value $ 8,186 $ 3,653
Less than 12 Months, Unrealized Loss (146) (35)
12 Months or More, Fair Value 47,093 49,748
12 Months or More, Unrealized Loss (3,136) (3,237)
Total, Fair Value 55,279 53,401
Total, Unrealized Loss $ (3,282) $ (3,272)
Corporate bonds    
Available-for-sale    
Number of Securities | security 2 2
Less than 12 Months, Fair Value $ 0 $ 0
Less than 12 Months, Unrealized Loss 0 0
12 Months or More, Fair Value 13,874 13,707
12 Months or More, Unrealized Loss (138) (315)
Total, Fair Value 13,874 13,707
Total, Unrealized Loss $ (138) $ (315)
Residential mortgage-backed securities    
Available-for-sale    
Number of Securities | security 397 389
Less than 12 Months, Fair Value $ 25,065 $ 13,535
Less than 12 Months, Unrealized Loss (312) (240)
12 Months or More, Fair Value 2,161,706 2,341,700
12 Months or More, Unrealized Loss (237,557) (304,579)
Total, Fair Value 2,186,771 2,355,235
Total, Unrealized Loss $ (237,869) $ (304,819)
Commercial mortgage-backed securities    
Available-for-sale    
Number of Securities | security 147 152
Less than 12 Months, Fair Value $ 36,175 $ 36,466
Less than 12 Months, Unrealized Loss (1,202) (1,042)
12 Months or More, Fair Value 926,733 986,809
12 Months or More, Unrealized Loss (59,623) (72,530)
Total, Fair Value 962,908 1,023,275
Total, Unrealized Loss $ (60,825) $ (73,572)