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Securities - Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 38,770 | $ 794,894
12 Months or More | 1,195,131 | 801,830
Total | 1,233,901 | 1,596,724
Unrealized Loss |  |
Less than 12 Months | (376) | (59,754)
12 Months or More | (153,965) | (144,737)
Total | (154,341) | (204,491)
State and municipal securities |  |
Fair Value |  |
Less than 12 Months | 27,106 | 171,079
12 Months or More | 246,442 | 175,011
Total | 273,548 | 346,090
Unrealized Loss |  |
Less than 12 Months | (266) | (14,947)
12 Months or More | (41,174) | (43,658)
Total | (41,440) | (58,605)
Fair Value |  |
Less than 12 Months | 4,717 | 6,518
12 Months or More | 6,131 | 0
Total | 10,848 | 6,518
Unrealized Loss |  |
Less than 12 Months | (447) | (482)
12 Months or More | (383) | 0
Total | (830) | (482)
Corporate bonds |  |
Fair Value |  |
Less than 12 Months | 4,254 | 69,618
12 Months or More | 74,566 | 11,640
Total | 78,820 | 81,258
Unrealized Loss |  |
Less than 12 Months | (53) | (5,581)
12 Months or More | (8,636) | (1,610)
Total | (8,689) | (7,191)
U.S. government and agency securities |  |
Fair Value |  |
Less than 12 Months | 0 | 152,471
12 Months or More | 77,340 | 95,576
Total | 77,340 | 248,047
Unrealized Loss |  |
Less than 12 Months | 0 | (7,373)
12 Months or More | (4,740) | (8,966)
Total | (4,740) | (16,339)
Commercial mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 0 | 37,083
12 Months or More | 93,396 | 54,860
Total | 93,396 | 91,943
Unrealized Loss |  |
Less than 12 Months | 0 | (3,416)
12 Months or More | (11,063) | (10,177)
Total | (11,063) | (13,593)
Residential mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 60 | 231,848
12 Months or More | 506,442 | 340,455
Total | 506,502 | 572,303
Unrealized Loss |  |
Less than 12 Months | (5) | (20,465)
12 Months or More | (63,115) | (56,997)
Total | (63,120) | (77,462)
Commercial collateralized mortgage obligations |  |
Fair Value |  |
Less than 12 Months | 0 | 21,999
12 Months or More | 35,183 | 16,814
Total | 35,183 | 38,813
Unrealized Loss |  |
Less than 12 Months | 0 | (2,516)
12 Months or More | (4,203) | (3,001)
Total | (4,203) | (5,517)
Residential collateralized mortgage obligations |  |
Fair Value |  |
Less than 12 Months | 0 | 48,749
12 Months or More | 130,144 | 97,621
Total | 130,144 | 146,370
Unrealized Loss |  |
Less than 12 Months | 0 | (3,928)
12 Months or More | (20,566) | (19,838)
Total | (20,566) | (23,766)
Asset-backed securities |  |
Fair Value |  |
Less than 12 Months | 7,350 | 62,047
12 Months or More | 31,618 | 9,853
Total | 38,968 | 71,900
Unrealized Loss |  |
Less than 12 Months | (52) | (1,528)
12 Months or More | (468) | (490)
Total | $ (520) | $ (2,018)

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