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SECURITIES (Reconciliation of fair value of Available for Sale securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-sale, Amortized Cost | $ 1,566,779 | $ 1,583,736
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 54 | 8,808
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (167,679) | (21,396)
Debt Securities, Available-for-Sale | 1,399,154 | 1,571,148
Debt Securities, Available-for-Sale, | 1,566,779 | 1,583,736
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
US Government Agencies Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 230,936 | 217,393
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 990
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (28,636) | (2,901)
Debt Securities, Available-for-Sale | 202,300 | 215,482
Debt Securities, Available-for-Sale, | 230,936 | 217,393
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
US Treasury Securities [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 874,035 | 873,467
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax |  | 172
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (82,694) | (12,191)
Debt Securities, Available-for-Sale | 791,341 | 861,448
Debt Securities, Available-for-Sale, | 874,035 | 873,467
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 359,068 | 364,955
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 54 | 4,512
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (45,434) | (5,534)
Debt Securities, Available-for-Sale | 313,688 | 363,933
Debt Securities, Available-for-Sale, | 359,068 | 364,955
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Agency collateralized mortgage obligations [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 41,874 | 78,966
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax |  | 1,282
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (3,031) | (571)
Debt Securities, Available-for-Sale | 38,843 | 79,677
Debt Securities, Available-for-Sale, | 41,874 | 78,966
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 193 | 192
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax |  | 11
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (2) | 0
Debt Securities, Available-for-Sale | 191 | 203
Debt Securities, Available-for-Sale, | 193 | 192
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Single issuer trust preferred securities issued by banks [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 0 | 489
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Debt Securities, Available-for-Sale |  | 491
Debt Securities, Available-for-Sale, | 0 | 489
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Pooled Trust Preferred Securities Issued By Banks And Insurers [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 1,203 | 1,199
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (169) | (199)
Debt Securities, Available-for-Sale | 1,034 | 1,000
Debt Securities, Available-for-Sale, | 1,203 | 1,199
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Small Business Administration Pooled Securities [Member] |  |
Debt Securities, Available-for-sale, Amortized Cost | 59,470 | 47,075
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 1,839
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (7,713) | 0
Debt Securities, Available-for-Sale | 51,757 | 48,914
Debt Securities, Available-for-Sale, | 59,470 | 47,075
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | $ 0 | $ 0

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