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INVESTMENT SECURITIES - Summary of AFS Securities with Unrealized Losses (Details) $ in Thousands | Sep. 30, 2025 USD ($) security | Dec. 31, 2024 USD ($) security
--- | --- | ---
Number of Securities |  |
Less Than 12 Months | security | 27 | 142
12 Months or More | security | 90 | 88
Total | security | 117 | 230
Fair Value |  |
Less Than 12 Months | $ 117,450 | $ 278,098
12 Months or More | 378,195 | 380,299
Total | 495,645 | 658,397
Unrealized Losses |  |
Less Than 12 Months | 1,163 | 2,233
12 Months or More | 29,007 | 34,742
Total | $ 30,170 | $ 36,975
U.S. Treasury securities |  |
Number of Securities |  |
Less Than 12 Months | security | 0 | 0
12 Months or More | security | 3 | 3
Total | security | 3 | 3
Fair Value |  |
Less Than 12 Months | $ 0 | $ 0
12 Months or More | 18,803 | 18,063
Total | 18,803 | 18,063
Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or More | 1,230 | 1,980
Total | $ 1,230 | $ 1,980
States and political subdivisions |  |
Number of Securities |  |
Less Than 12 Months | security | 3 | 13
12 Months or More | security | 42 | 42
Total | security | 45 | 55
Fair Value |  |
Less Than 12 Months | $ 10,586 | $ 10,080
12 Months or More | 178,052 | 189,448
Total | 188,638 | 199,528
Unrealized Losses |  |
Less Than 12 Months | 351 | 131
12 Months or More | 19,110 | 20,269
Total | $ 19,461 | $ 20,400
GSE residential MBSs |  |
Number of Securities |  |
Less Than 12 Months | security | 0 | 68
12 Months or More | security | 8 | 15
Total | security | 8 | 83
Fair Value |  |
Less Than 12 Months | $ 0 | $ 85,836
12 Months or More | 13,223 | 55,579
Total | 13,223 | 141,415
Unrealized Losses |  |
Less Than 12 Months | 0 | 1,117
12 Months or More | 2,216 | 3,180
Total | $ 2,216 | $ 4,297
GSE commercial MBSs |  |
Number of Securities |  |
Less Than 12 Months | security | 2 | 3
12 Months or More | security | 0 | 0
Total | security | 2 | 3
Fair Value |  |
Less Than 12 Months | $ 1,263 | $ 2,963
12 Months or More | 0 | 0
Total | 1,263 | 2,963
Unrealized Losses |  |
Less Than 12 Months | 17 | 21
12 Months or More | 0 | 0
Total | $ 17 | $ 21
GSE residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 16 | 52
12 Months or More | security | 24 | 15
Total | security | 40 | 67
Fair Value |  |
Less Than 12 Months | $ 84,689 | $ 158,439
12 Months or More | 108,285 | 56,443
Total | 192,974 | 214,882
Unrealized Losses |  |
Less Than 12 Months | 616 | 729
12 Months or More | 4,537 | 6,080
Total | $ 5,153 | $ 6,809
Non-agency CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 2 | 2
12 Months or More | security | 5 | 4
Total | security | 7 | 6
Fair Value |  |
Less Than 12 Months | $ 7,133 | $ 8,816
12 Months or More | 22,344 | 16,636
Total | 29,477 | 25,452
Unrealized Losses |  |
Less Than 12 Months | 58 | 218
12 Months or More | 1,078 | 2,248
Total | $ 1,136 | $ 2,466
Asset-backed |  |
Number of Securities |  |
Less Than 12 Months | security | 4 | 4
12 Months or More | security | 8 | 9
Total | security | 12 | 13
Fair Value |  |
Less Than 12 Months | $ 13,779 | $ 11,964
12 Months or More | 37,488 | 44,130
Total | 51,267 | 56,094
Unrealized Losses |  |
Less Than 12 Months | 121 | 17
12 Months or More | 836 | 985
Total | $ 957 | $ 1,002

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