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SECURITIES - Investments in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Unrealized Loss |  |
Less than 12 Months | $ (1,541) | $ (37,977)
12 Months or More | (100,104) | (53,061)
Total | (101,645) | (91,038)
Fair Value |  |
Less than 12 Months | 35,745 | 531,226
12 Months or More | 713,939 | 299,159
Total | 749,684 | 830,385
Unrealized Loss |  |
Less than 12 Months |  | (22,823)
12 Months or More |  | (40,171)
Total |  | (62,994)
Fair Value |  |
Less than 12 Months |  | 220,934
12 Months or More |  | 239,252
Total |  | 460,186
Unrealized Loss |  |
Less than 12 Months |  | (60,800)
12 Months or More |  | (93,232)
Total |  | (154,032)
Fair Value |  |
Less than 12 Months |  | 752,160
12 Months or More |  | 538,411
Total |  | 1,290,571
U.S. Treasury |  |
Unrealized Loss |  |
Less than 12 Months | 0 | (8,401)
12 Months or More | (15,357) | (6,944)
Total | (15,357) | (15,345)
Fair Value |  |
Less than 12 Months | 0 | 92,445
12 Months or More | 154,394 | 62,070
Total | 154,394 | 154,515
U.S. government agency |  |
Unrealized Loss |  |
Less than 12 Months | (5) | (2,980)
12 Months or More | (4,763) | (1,154)
Total | (4,768) | (4,134)
Fair Value |  |
Less than 12 Months | 1,380 | 47,370
12 Months or More | 49,298 | 7,787
Total | 50,678 | 55,157
Unrealized Loss |  |
Less than 12 Months |  | (1,754)
12 Months or More |  | (7,974)
Total |  | (9,728)
Fair Value |  |
Less than 12 Months |  | 15,751
12 Months or More |  | 62,945
Total |  | 78,696
Municipal |  |
Unrealized Loss |  |
Less than 12 Months | (282) | (10,906)
12 Months or More | (35,962) | (21,283)
Total | (36,244) | (32,189)
Fair Value |  |
Less than 12 Months | 10,479 | 149,261
12 Months or More | 183,720 | 87,794
Total | 194,199 | 237,055
Unrealized Loss |  |
Less than 12 Months |  | (314)
12 Months or More |  | 0
Total |  | (314)
Fair Value |  |
Less than 12 Months |  | 23,433
12 Months or More |  | 0
Total |  | 23,433
Agency residential |  |
Unrealized Loss |  |
Less than 12 Months | (725) | (8,332)
12 Months or More | (19,783) | (9,908)
Total | (20,508) | (18,240)
Fair Value |  |
Less than 12 Months | 13,924 | 127,288
12 Months or More | 160,778 | 65,692
Total | 174,702 | 192,980
Unrealized Loss |  |
Less than 12 Months |  | (4,039)
12 Months or More |  | (2,431)
Total |  | (6,470)
Fair Value |  |
Less than 12 Months |  | 78,452
12 Months or More |  | 17,806
Total |  | 96,258
Agency commercial |  |
Unrealized Loss |  |
Less than 12 Months | (86) | (4,764)
12 Months or More | (18,507) | (12,408)
Total | (18,593) | (17,172)
Fair Value |  |
Less than 12 Months | 3,645 | 62,672
12 Months or More | 120,593 | 70,216
Total | 124,238 | 132,888
Unrealized Loss |  |
Less than 12 Months |  | (16,716)
12 Months or More |  | (29,766)
Total |  | (46,482)
Fair Value |  |
Less than 12 Months |  | 103,298
12 Months or More |  | 158,501
Total |  | 261,799
Corporate |  |
Unrealized Loss |  |
Less than 12 Months | (443) | (2,594)
12 Months or More | (5,732) | (1,364)
Total | (6,175) | (3,958)
Fair Value |  |
Less than 12 Months | 6,317 | 52,190
12 Months or More | 45,156 | 5,600
Total | $ 51,473 | $ 57,790

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