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SECURITIES (Schedule of Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 2,426,395 $ 2,460,262
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1,968 1,091
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 319,418 356,842
Debt Securities, Available-for-Sale 2,108,945 2,104,511
Held-to-maturity Securities, Amortized Cost 992,088 1,001,861
Held-to-maturity Securities, Gross Unrealized Gains 2 36
Held-to-maturity Securities, Gross Unrealized Losses 172,537 176,072
Securities—held-to-maturity 819,261 825,528
Allowance for Credit Losses (292) (297)
debt securities, held-to-maturity, accrued interest receivable 3,700 4,200
Debt Securities, Available-for-Sale, Accrued Interest Receivable 9,200 9,000
U.S. Government and agency obligations    
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 7,965 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 409 559
Debt Securities, Available-for-Sale 7,556 7,933
Held-to-maturity Securities, Amortized Cost 301 302
Held-to-maturity Securities, Gross Unrealized Gains 1 0
Held-to-maturity Securities, Gross Unrealized Losses 3 4
Securities—held-to-maturity 299 298
Allowance for Credit Losses 0 0
Municipal bonds    
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 157,399 153,982
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 255 453
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 31,138 30,453
Debt Securities, Available-for-Sale 126,516 123,982
Held-to-maturity Securities, Amortized Cost 437,344 438,196
Held-to-maturity Securities, Gross Unrealized Gains 1 36
Held-to-maturity Securities, Gross Unrealized Losses 70,729 62,809
Securities—held-to-maturity 366,474 375,280
Allowance for Credit Losses (142) (143)
Corporate bonds    
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 131,408 131,379
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 97 100
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 5,431 6,489
Debt Securities, Available-for-Sale 126,074 124,990
Held-to-maturity Securities, Amortized Cost 2,629 2,658
Held-to-maturity Securities, Gross Unrealized Gains 0 0
Held-to-maturity Securities, Gross Unrealized Losses 5 6
Securities—held-to-maturity 2,474 2,498
Allowance for Credit Losses (150) (154)
Mortgage-backed or related securities    
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 1,966,137 1,995,805
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1,440 383
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 282,391 319,340
Debt Securities, Available-for-Sale 1,685,186 1,676,848
Held-to-maturity Securities, Amortized Cost 551,814 560,705
Held-to-maturity Securities, Gross Unrealized Gains 0 0
Held-to-maturity Securities, Gross Unrealized Losses 101,800 113,253
Securities—held-to-maturity 450,014 447,452
Allowance for Credit Losses 0 0
Asset-backed securities    
Schedule of Securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 163,486 170,604
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 176 155
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 49 1
Debt Securities, Available-for-Sale $ 163,613 $ 170,758