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Securities - Unrealized Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 36,503 | $ 38,770
12 Months or More | 1,131,136 | 1,195,131
Total | 1,167,639 | 1,233,901
Unrealized Loss |  |
Less than 12 Months | (524) | (376)
12 Months or More | (158,937) | (153,965)
Total | (159,461) | (154,341)
State and municipal securities |  |
Fair Value |  |
Less than 12 Months | 25,235 | 27,106
12 Months or More | 246,037 | 246,442
Total | 271,272 | 273,548
Unrealized Loss |  |
Less than 12 Months | (258) | (266)
12 Months or More | (43,357) | (41,174)
Total | (43,615) | (41,440)
Fair Value |  |
Less than 12 Months | 4,833 | 4,717
12 Months or More | 6,123 | 6,131
Total | 10,956 | 10,848
Unrealized Loss |  |
Less than 12 Months | (328) | (447)
12 Months or More | (391) | (383)
Total | (719) | (830)
Corporate bonds |  |
Fair Value |  |
Less than 12 Months | 800 | 4,254
12 Months or More | 73,213 | 74,566
Total | 74,013 | 78,820
Unrealized Loss |  |
Less than 12 Months | (200) | (53)
12 Months or More | (7,970) | (8,636)
Total | (8,170) | (8,689)
U.S. treasury and government agency securities |  |
Fair Value |  |
Less than 12 Months | 0 | 0
12 Months or More | 58,922 | 77,340
Total | 58,922 | 77,340
Unrealized Loss |  |
Less than 12 Months | 0 | 0
12 Months or More | (4,736) | (4,740)
Total | (4,736) | (4,740)
Commercial mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 0 | 0
12 Months or More | 92,740 | 93,396
Total | 92,740 | 93,396
Unrealized Loss |  |
Less than 12 Months | 0 | 0
12 Months or More | (11,410) | (11,063)
Total | (11,410) | (11,063)
Residential mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 0 | 60
12 Months or More | 486,623 | 506,442
Total | 486,623 | 506,502
Unrealized Loss |  |
Less than 12 Months | 0 | (5)
12 Months or More | (66,024) | (63,115)
Total | (66,024) | (63,120)
Commercial collateralized mortgage obligations |  |
Fair Value |  |
Less than 12 Months | 6,627 | 0
12 Months or More | 34,799 | 35,183
Total | 41,426 | 35,183
Unrealized Loss |  |
Less than 12 Months | (64) | 0
12 Months or More | (4,384) | (4,203)
Total | (4,448) | (4,203)
Residential collateralized mortgage obligations |  |
Fair Value |  |
Less than 12 Months | 0 | 0
12 Months or More | 126,333 | 130,144
Total | 126,333 | 130,144
Unrealized Loss |  |
Less than 12 Months | 0 | 0
12 Months or More | (20,977) | (20,566)
Total | (20,977) | (20,566)
Asset-backed securities |  |
Fair Value |  |
Less than 12 Months | 3,841 | 7,350
12 Months or More | 12,469 | 31,618
Total | 16,310 | 38,968
Unrealized Loss |  |
Less than 12 Months | (2) | (52)
12 Months or More | (79) | (468)
Total | $ (81) | $ (520)

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