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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Serviced Loans |  |  |
Servicing Assets at Amortized Value [Line Items] |  |  |
Loans serviced for others | $ 2,780,000 | $ 2,770,000 |
Mortgage Servicing Rights |  |  |
Servicing Assets at Amortized Value [Line Items] |  |  |
Custodial accounts | 11,600 | 11,200 |
Servicing Asset at Amortized Value, Balance [Roll Forward] |  |  |
Balance, beginning of the year | 16,166 | 17,206 | $ 15,223
Additions—amounts capitalized | 1,590 | 3,200 | 7,260
Servicing Asset at Amortized Cost, Additions | 313 | 285 | 159
Amortization | (3,325) | (4,216) | (6,580)
Valuation adjustments in the period | 95 | 309 | (1,144)
Balance, end of the year | $ 14,649 | $ 16,166 | $ 17,206

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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-1 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-2 + Details
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