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INVESTMENT SECURITIES - Summary of AFS Securities with Unrealized Losses (Details) $ in Thousands | Mar. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($) security
--- | --- | ---
Number of Securities |  |
Less Than 12 Months | security | 11 | 12
12 Months or More | security | 94 | 91
Total | security | 105 | 103
Fair Value |  |
Less Than 12 Months | $ 31,125 | $ 27,525
12 Months or More | 428,508 | 422,911
Total | 459,633 | 450,436
Unrealized Losses |  |
Less Than 12 Months | 263 | 326
12 Months or More | 38,180 | 36,561
Total | $ 38,443 | $ 36,887
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 | 17,669 | 17,840
Total | 17,669 | 17,840
Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or More | 2,385 | 2,217
Total | $ 2,385 | $ 2,217
States and political subdivisions |  |
Number of Securities |  |
Less Than 12 Months | security | 3 | 4
12 Months or More | security | 41 | 40
Total | security | 44 | 44
Fair Value |  |
Less Than 12 Months | $ 1,983 | $ 2,419
12 Months or More | 198,128 | 199,933
Total | 200,111 | 202,352
Unrealized Losses |  |
Less Than 12 Months | 65 | 53
12 Months or More | 20,203 | 18,477
Total | $ 20,268 | $ 18,530
GSE residential MBSs |  |
Number of Securities |  |
Less Than 12 Months | security | 0 | 0
12 Months or More | security | 15 | 15
Total | security | 15 | 15
Fair Value |  |
Less Than 12 Months | $ 0 | $ 0
12 Months or More | 57,956 | 57,632
Total | 57,956 | 57,632
Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or More | 3,512 | 4,037
Total | $ 3,512 | $ 4,037
GSE residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 6 | 4
12 Months or More | security | 15 | 14
Total | security | 21 | 18
Fair Value |  |
Less Than 12 Months | $ 25,516 | $ 12,710
12 Months or More | 60,657 | 56,765
Total | 86,173 | 69,475
Unrealized Losses |  |
Less Than 12 Months | 159 | 186
12 Months or More | 6,579 | 6,014
Total | $ 6,738 | $ 6,200
Non-agency CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 2 | 3
12 Months or More | security | 5 | 4
Total | security | 7 | 7
Fair Value |  |
Less Than 12 Months | $ 3,626 | $ 11,531
12 Months or More | 22,536 | 16,334
Total | 26,162 | 27,865
Unrealized Losses |  |
Less Than 12 Months | 39 | 83
12 Months or More | 3,697 | 3,726
Total | $ 3,736 | $ 3,809
Asset-backed |  |
Number of Securities |  |
Less Than 12 Months | security | 0 | 1
12 Months or More | security | 15 | 15
Total | security | 15 | 16
Fair Value |  |
Less Than 12 Months | $ 0 | $ 865
12 Months or More | 71,562 | 74,407
Total | 71,562 | 75,272
Unrealized Losses |  |
Less Than 12 Months | 0 | 4
12 Months or More | 1,804 | 2,090
Total | $ 1,804 | $ 2,094

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