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SECURITIES (Schedule of Securities) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | $ 2,572,544 | $ 2,729,980
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 1,261 | 2,074
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 376,112 | 358,271
Debt Securities, Available-for-Sale | 2,197,693 | 2,373,783
Held-to-maturity Securities, Amortized Cost | 1,023,342 | 1,059,387
Held-to-maturity Securities, Gross Unrealized Gains | 72 | 687
Held-to-maturity Securities, Gross Unrealized Losses | 170,391 | 152,228
Securities—held-to-maturity | 852,709 | 907,514
Allowance for Credit Losses | (314) | (332)
debt securities, held-to-maturity, accrued interest receivable | 4,200 | 4,500
Debt Securities, Available-for-Sale, Accrued Interest Receivable | 10,000 | 10,800
U.S. Government and agency obligations |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 9,228 | 34,929
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 674 | 740
Debt Securities, Available-for-Sale | 8,554 | 34,189
Held-to-maturity Securities, Amortized Cost | 305 | 307
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 6 | 5
Securities—held-to-maturity | 299 | 302
Allowance for Credit Losses | 0 | 0
Municipal bonds |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 154,076 | 161,264
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 579 | 832
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 29,866 | 29,191
Debt Securities, Available-for-Sale | 124,789 | 132,905
Held-to-maturity Securities, Amortized Cost | 444,104 | 466,032
Held-to-maturity Securities, Gross Unrealized Gains | 72 | 687
Held-to-maturity Securities, Gross Unrealized Losses | 61,565 | 53,563
Securities—held-to-maturity | 382,461 | 412,999
Allowance for Credit Losses | (150) | 157
Corporate bonds |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 131,333 | 131,291
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 10,606 | 12,168
Debt Securities, Available-for-Sale | 120,727 | 119,123
Held-to-maturity Securities, Amortized Cost | 2,719 | 2,781
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 18 | 20
Securities—held-to-maturity | 2,537 | 2,586
Allowance for Credit Losses | (164) | 175
Mortgage-backed or related securities |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 2,069,774 | 2,179,947
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 57 | 942
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 334,966 | 314,175
Debt Securities, Available-for-Sale | 1,734,865 | 1,866,714
Held-to-maturity Securities, Amortized Cost | 576,214 | 590,267
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 108,802 | 98,640
Securities—held-to-maturity | 467,412 | 491,627
Allowance for Credit Losses | 0 | 0
Asset-backed securities |  |
Schedule of Securities [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 208,133 | 222,549
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 625 | 300
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 1,997
Debt Securities, Available-for-Sale | $ 208,758 | $ 220,852

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