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INVESTMENT SECURITIES - INVESTMENT CATEGORY (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Available-for-sale debt securities |  |
Less than 12 months Fair Value | $ 60,062 | $ 30,286
Less than 12 months Unrealized Losses | (296) | (159)
12 months or more Fair Value | 402,979 | 533,745
12 months or more Unrealized Losses | (26,025) | (28,921)
Total Fair Value | 463,041 | 564,031
Total Unrealized Losses | $ (26,321) | $ (29,080)
Number of securities held | 179 | 191
Number of securities held in an unrealized loss position | 122 | 144
Maximum percentage of holdings of securities of any one issuer, other than the U.S. Government and its agencies | 10.00% | 10.00%
U.S. Treasury securities and U.S. Government agencies |  |
Available-for-sale debt securities |  |
Less than 12 months Fair Value | $ 51,232 | $ 26,707
Less than 12 months Unrealized Losses | (113) | (84)
12 months or more Fair Value | 263,757 | 380,326
12 months or more Unrealized Losses | (11,174) | (14,459)
Total Fair Value | 314,989 | 407,033
Total Unrealized Losses | (11,287) | (14,543)
Mortgage-backed securities - residential |  |
Available-for-sale debt securities |  |
Less than 12 months Fair Value | 8,668 | 1,911
Less than 12 months Unrealized Losses | (183) | (23)
12 months or more Fair Value | 121,552 | 136,180
12 months or more Unrealized Losses | (13,838) | (13,439)
Total Fair Value | 130,220 | 138,091
Total Unrealized Losses | (14,021) | (13,462)
Collateralized mortgage obligations |  |
Available-for-sale debt securities |  |
Less than 12 months Fair Value | 162 | 1,668
Less than 12 months Unrealized Losses |  | (52)
12 months or more Fair Value | 17,670 | 17,239
12 months or more Unrealized Losses | (1,013) | (1,023)
Total Fair Value | 17,832 | 18,907
Total Unrealized Losses | $ (1,013) | $ (1,075)

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