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INVESTMENT SECURITIES (Unrealized Gains and Losses by Category) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Securities Available-for-Sale, Fair Value |  |
Less than 12 months | $ 471,516 | $ 875,760
12 months or more | 777,051 | 786,686
Total | 1,248,567 | 1,662,446
Securities Available-for-Sale, Unrealized Loss |  |
Less than 12 months | 5,077 | 15,008
12 months or more | 83,315 | 100,536
Total | 88,392 | 115,544
FNMA and FHLMC certificates |  |
Securities Available-for-Sale, Fair Value |  |
Less than 12 months | 406,272 | 791,987
12 months or more | 571,505 | 579,727
Total | 977,777 | 1,371,714
Securities Available-for-Sale, Unrealized Loss |  |
Less than 12 months | 3,984 | 12,989
12 months or more | 48,588 | 61,462
Total | 52,572 | 74,451
GNMA certificates |  |
Securities Available-for-Sale, Fair Value |  |
Less than 12 months | 65,244 | 83,773
12 months or more | 200,797 | 201,320
Total | 266,041 | 285,093
Securities Available-for-Sale, Unrealized Loss |  |
Less than 12 months | 1,093 | 2,019
12 months or more | 34,633 | 38,945
Total | 35,726 | 40,964
CMOs issued by US Government-sponsored agencies |  |
Securities Available-for-Sale, Fair Value |  |
Less than 12 months | 0 | 0
12 months or more | 4,749 | 5,639
Total | 4,749 | 5,639
Securities Available-for-Sale, Unrealized Loss |  |
Less than 12 months | 0 | 0
12 months or more | 94 | 129
Total | $ 94 | $ 129

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