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Securities - Unrealized Losses (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair Value    
Less than 12 Months $ 45,913 $ 216,560
12 Months or More 640,887 840,598
Total 686,800 1,057,158
Unrealized Loss    
Less than 12 Months (749) (2,803)
12 Months or More (83,732) (132,788)
Total (84,481) (135,591)
State and municipal securities    
Fair Value    
Less than 12 Months 31,711 18,349
12 Months or More 220,836 226,484
Total 252,547 244,833
Unrealized Loss    
Less than 12 Months (706) (346)
12 Months or More (32,315) (43,536)
Total (33,021) (43,882)
Fair Value    
Less than 12 Months 0 0
12 Months or More 10,018 10,456
Total 10,018 10,456
Unrealized Loss    
Less than 12 Months 0 0
12 Months or More (584) (689)
Total (584) (689)
Corporate bonds    
Fair Value    
Less than 12 Months 4,968 7,450
12 Months or More 42,708 59,443
Total 47,676 66,893
Unrealized Loss    
Less than 12 Months (32) (550)
12 Months or More (2,385) (4,700)
Total (2,417) (5,250)
U.S. treasury and government agency securities    
Fair Value    
Less than 12 Months 118 10,062
12 Months or More 2,956 3,423
Total 3,074 13,485
Unrealized Loss    
Less than 12 Months (1) (52)
12 Months or More (719) (887)
Total (720) (939)
Commercial mortgage-backed securities    
Fair Value    
Less than 12 Months 0 4,418
12 Months or More 13,760 39,866
Total 13,760 44,284
Unrealized Loss    
Less than 12 Months 0 (120)
12 Months or More (1,819) (5,539)
Total (1,819) (5,659)
Residential mortgage-backed securities    
Fair Value    
Less than 12 Months 0 148,383
12 Months or More 249,972 386,414
Total 249,972 534,797
Unrealized Loss    
Less than 12 Months 0 (1,296)
12 Months or More (31,136) (56,258)
Total (31,136) (57,554)
Commercial collateralized mortgage obligations    
Fair Value    
Less than 12 Months 0 13,014
12 Months or More 15,131 15,552
Total 15,131 28,566
Unrealized Loss    
Less than 12 Months 0 (148)
12 Months or More (1,121) (2,549)
Total (1,121) (2,697)
Residential collateralized mortgage obligations    
Fair Value    
Less than 12 Months 9,116 14,884
12 Months or More 95,524 109,416
Total 104,640 124,300
Unrealized Loss    
Less than 12 Months (10) (291)
12 Months or More (14,237) (19,319)
Total $ (14,247) $ (19,610)