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SECURITIES (Reconciliation of amortized cost of held to maturity securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | $ 1,705,120 | $ 1,066,818
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 729 | 12,474
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (181,139) | (15,159)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 1,524,710 | 1,064,133
US Government Agencies Debt Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 31,258 | 32,987
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (2,222) | (441)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 29,036 | 32,546
US Treasury Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 100,634 | 102,560
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 6
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (11,755) | (324)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 88,879 | 102,242
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 898,927 | 493,012
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 408 | 8,495
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (83,383) | (4,271)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 815,952 | 497,236
Agency collateralized mortgage obligations [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 535,971 | 415,736
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 3,232
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (77,554) | (10,123)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 458,417 | 408,845
Single issuer trust preferred securities issued by banks [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 1,500 | 1,500
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 8 | 8
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | 1,508 | 1,508
Small Business Administration Pooled Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 136,830 | 21,023
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 313 | 733
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (6,225) | 0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Fair Value | $ 130,918 | $ 21,756

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- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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