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SECURITIES (Reconciliation of fair value of Available for Sale securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Available-for-sale, Amortized Cost | $ 1,459,862 | $ 1,566,779
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 30 | 54
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (125,636) | (167,679)
Debt Securities, Available-for-Sale | 1,334,256 | 1,399,154
Debt Securities, Available-for-Sale, | 1,459,862 | 1,566,779
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 | 230,198 | 230,936
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (23,060) | (28,636)
Debt Securities, Available-for-Sale | 207,138 | 202,300
Debt Securities, Available-for-Sale, | 230,198 | 230,936
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 | 824,597 | 874,035
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (55,495) | (82,694)
Debt Securities, Available-for-Sale | 769,102 | 791,341
Debt Securities, Available-for-Sale, | 824,597 | 874,035
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 | 314,269 | 359,068
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 24 | 54
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (37,246) | (45,434)
Debt Securities, Available-for-Sale | 277,047 | 313,688
Debt Securities, Available-for-Sale, | 314,269 | 359,068
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 | 35,713 | 41,874
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 6 |
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (2,530) | (3,031)
Debt Securities, Available-for-Sale | 33,189 | 38,843
Debt Securities, Available-for-Sale, | 35,713 | 41,874
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 | 195 | 193
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (5) | (2)
Debt Securities, Available-for-Sale | 190 | 191
Debt Securities, Available-for-Sale, | 195 | 193
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 | 1,188 | 1,203
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (170) | (169)
Debt Securities, Available-for-Sale | 1,018 | 1,034
Debt Securities, Available-for-Sale, | 1,188 | 1,203
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 | 53,702 | 59,470
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (7,130) | (7,713)
Debt Securities, Available-for-Sale | 46,572 | 51,757
Debt Securities, Available-for-Sale, | 53,702 | 59,470
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | $ 0 | $ 0

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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