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INVESTMENT SECURITIES (Investment Securities by Contractual Maturity - AFS) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 2,177,761 | $ 1,522,812
Gross Unrealized Gains | 13,476 | 995
Gross Unrealized Losses | 91,973 | 111,031
Fair Value | $ 2,099,264 | $ 1,412,776
Weighted Average Yield | 4.07% | 2.90%
Mortgage-backed securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,880,395 | $ 1,210,834
Gross Unrealized Gains | 13,424 | 965
Gross Unrealized Losses | 91,970 | 109,298
Fair Value | $ 1,801,849 | $ 1,102,501
Weighted Average Yield | 3.86% | 2.79%
Mortgage-backed securities | FNMA and FHLMC certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,464,134 | $ 837,703
Gross Unrealized Gains | 8,989 | 59
Gross Unrealized Losses | 57,178 | 69,646
Fair Value | $ 1,415,945 | $ 768,116
Weighted Average Yield | 4.03% | 2.79%
Mortgage-backed securities | GNMA certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 406,275 | $ 357,497
Gross Unrealized Gains | 4,435 | 906
Gross Unrealized Losses | 34,416 | 38,869
Fair Value | $ 376,294 | $ 319,534
Weighted Average Yield | 3.30% | 2.80%
Mortgage-backed securities | CMOs issued by US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 9,986 | $ 15,634
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 376 | 783
Fair Value | $ 9,610 | $ 14,851
Weighted Average Yield | 2.06% | 1.99%
Mortgage-backed securities | Due less than 1 year | GNMA certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 5 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Fair Value | $ 5 |
Weighted Average Yield | 1.31% |
Mortgage-backed securities | Due from 1 to 5 years | FNMA and FHLMC certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 6,972 | $ 10,155
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 311 | 550
Fair Value | $ 6,661 | $ 9,605
Weighted Average Yield | 1.76% | 1.76%
Mortgage-backed securities | Due from 1 to 5 years | GNMA certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 8,851 | $ 12,505
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 351 | 632
Fair Value | $ 8,500 | $ 11,873
Weighted Average Yield | 1.71% | 1.66%
Mortgage-backed securities | Due from 1 to 5 years | CMOs issued by US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 9,071 | $ 14,190
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 364 | 755
Fair Value | $ 8,707 | $ 13,435
Weighted Average Yield | 1.78% | 1.78%
Mortgage-backed securities | Due from 5 to 10 years | FNMA and FHLMC certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 45,835 | $ 59,167
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 2,767 | 3,764
Fair Value | $ 43,068 | $ 55,403
Weighted Average Yield | 2.00% | 2.00%
Mortgage-backed securities | Due from 5 to 10 years | GNMA certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 17,113 | $ 24,575
Gross Unrealized Gains | 16 | 14
Gross Unrealized Losses | 955 | 1,585
Fair Value | $ 16,174 | $ 23,004
Weighted Average Yield | 2.19% | 2.13%
Mortgage-backed securities | Due from 5 to 10 years | CMOs issued by US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 54 | $ 485
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 10
Fair Value | $ 54 | $ 475
Weighted Average Yield | 2.14% | 2.14%
Mortgage-backed securities | Due after 10 years | FNMA and FHLMC certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,411,327 | $ 768,381
Gross Unrealized Gains | 8,989 | 59
Gross Unrealized Losses | 54,100 | 65,332
Fair Value | $ 1,366,216 | $ 703,108
Weighted Average Yield | 4.11% | 2.87%
Mortgage-backed securities | Due after 10 years | GNMA certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 380,306 | $ 320,417
Gross Unrealized Gains | 4,419 | 892
Gross Unrealized Losses | 33,110 | 36,652
Fair Value | $ 351,615 | $ 284,657
Weighted Average Yield | 3.38% | 2.90%
Mortgage-backed securities | Due after 10 years | CMOs issued by US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 861 | $ 959
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 12 | 18
Fair Value | $ 849 | $ 941
Weighted Average Yield | 5.07% | 5.06%
Investment securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 297,366 | $ 311,978
Gross Unrealized Gains | 52 | 30
Gross Unrealized Losses | 3 | 1,733
Fair Value | $ 297,415 | $ 310,275
Weighted Average Yield | 5.39% | 3.35%
Investment securities | Due less than 1 year | US Treasury securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 296,747 | $ 310,862
Gross Unrealized Gains | 52 | 0
Gross Unrealized Losses | 0 | 1,729
Fair Value | $ 296,799 | $ 309,133
Weighted Average Yield | 5.40% | 3.34%
Investment securities | Due less than 1 year | Other debt securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 500 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Fair Value | $ 500 |
Weighted Average Yield | 3.25% |
Investment securities | Due from 1 to 5 years | Other debt securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 119 | $ 1,116
Gross Unrealized Gains | 0 | 30
Gross Unrealized Losses | 3 | 4
Fair Value | $ 116 | $ 1,142
Weighted Average Yield | 2.97% | 4.45%

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