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INVESTMENT SECURITIES (Unrealized Gains and Losses by Category) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Securities Available-for-Sale, Amortized Cost |  |
12 months or more | $ 1,012,881 | $ 1,017,108
Less than 12 months | 235,275 | 114,099
Amortized Cost | 1,248,156 | 1,131,207
Securities Available-for-Sale, Unrealized Loss |  |
12 months or more | 107,559 | 91,590
Less than 12 months | 4,538 | 383
Total | 112,097 | 91,973
Securities Available-for-Sale, Fair Value |  |
12 months or more | 905,322 | 925,518
Less than 12 months | 230,737 | 113,716
Total | 1,136,059 | 1,039,234
FNMA and FHLMC certificates |  |
Securities Available-for-Sale, Amortized Cost |  |
12 months or more | 737,230 | 731,334
Less than 12 months | 197,672 | 106,235
Amortized Cost | 934,902 | 837,569
Securities Available-for-Sale, Unrealized Loss |  |
12 months or more | 67,814 | 56,847
Less than 12 months | 4,132 | 331
Total | 71,946 | 57,178
Securities Available-for-Sale, Fair Value |  |
12 months or more | 669,416 | 674,487
Less than 12 months | 193,540 | 105,904
Total | 862,956 | 780,391
GNMA certificates |  |
Securities Available-for-Sale, Amortized Cost |  |
12 months or more | 267,882 | 275,669
Less than 12 months | 37,603 | 7,864
Amortized Cost | 305,485 | 283,533
Securities Available-for-Sale, Unrealized Loss |  |
12 months or more | 39,458 | 34,364
Less than 12 months | 406 | 52
Total | 39,864 | 34,416
Securities Available-for-Sale, Fair Value |  |
12 months or more | 228,424 | 241,305
Less than 12 months | 37,197 | 7,812
Total | 265,621 | 249,117
CMOs issued by US Government-sponsored agencies |  |
Securities Available-for-Sale, Amortized Cost |  |
12 months or more | 7,686 | 9,986
Amortized Cost | 7,686 | 9,986
Securities Available-for-Sale, Unrealized Loss |  |
12 months or more | 285 | 376
Total | 285 | 376
Securities Available-for-Sale, Fair Value |  |
12 months or more | 7,401 | 9,610
Total | 7,401 | 9,610
Other debt securities |  |
Securities Available-for-Sale, Amortized Cost |  |
12 months or more | 83 | 119
Amortized Cost | 83 | 119
Securities Available-for-Sale, Unrealized Loss |  |
12 months or more | 2 | 3
Total | 2 | 3
Securities Available-for-Sale, Fair Value |  |
12 months or more | 81 | 116
Total | $ 81 | $ 116

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