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SECURITIES (Schedule of Securities) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | $ 2,292,835 | $ 2,460,262
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 6,442 | 1,091
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 280,752 | 356,842
Debt Securities, Available-for-Sale | 2,018,525 | 2,104,511
Held-to-maturity Securities, Amortized Cost | 971,901 | 1,001,861
Held-to-maturity Securities, Gross Unrealized Gains | 41 | 36
Held-to-maturity Securities, Gross Unrealized Losses | 156,210 | 176,072
Securities—held-to-maturity | 815,434 | 825,528
Allowance for Credit Losses | (298) | (297)
debt securities, held-to-maturity, accrued interest receivable | 3,600 | 4,200
Debt Securities, Available-for-Sale, Accrued Interest Receivable | 8,000 | 9,000
U.S. Government and agency obligations |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 6,892 | 8,492
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 344 | 559
Debt Securities, Available-for-Sale | 6,548 | 7,933
Held-to-maturity Securities, Amortized Cost | 279 | 302
Held-to-maturity Securities, Gross Unrealized Gains | 1 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 3 | 4
Securities—held-to-maturity | 277 | 298
Allowance for Credit Losses | 0 | 0
Municipal bonds |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 159,353 | 153,982
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 479 | 453
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 28,617 | 30,453
Debt Securities, Available-for-Sale | 131,215 | 123,982
Held-to-maturity Securities, Amortized Cost | 433,560 | 438,196
Held-to-maturity Securities, Gross Unrealized Gains | 40 | 36
Held-to-maturity Securities, Gross Unrealized Losses | 63,161 | 62,809
Securities—held-to-maturity | 370,288 | 375,280
Allowance for Credit Losses | (151) | (143)
Corporate bonds |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 123,679 | 131,379
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 3,446 | 100
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 3,421 | 6,489
Debt Securities, Available-for-Sale | 123,704 | 124,990
Held-to-maturity Securities, Amortized Cost | 2,573 | 2,658
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 1 | 6
Securities—held-to-maturity | 2,425 | 2,498
Allowance for Credit Losses | (147) | (154)
Mortgage-backed or related securities |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 1,868,033 | 1,995,805
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 2,313 | 383
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 248,370 | 319,340
Debt Securities, Available-for-Sale | 1,621,976 | 1,676,848
Held-to-maturity Securities, Amortized Cost | 535,489 | 560,705
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 93,045 | 113,253
Securities—held-to-maturity | 442,444 | 447,452
Allowance for Credit Losses | 0 | 0
Asset-backed securities |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 134,878 | 170,604
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 204 | 155
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 1
Debt Securities, Available-for-Sale | $ 135,082 | $ 170,758

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