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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Amounts Included in the Consolidated Statements of Income Related to Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Hedging derivatives | Economic Hedging | Interest Rate Swap | Industrial Revenue Bond |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | $ 941 | $ 619 | $ (289)
Hedging derivatives | Economic Hedging | Interest Rate Swap | Commercial loan |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | (171,272) | (86,099) | 85,206
Hedging derivatives | Economic Hedging | Reverse Interest Rate Swaps | Commercial loan |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | 171,272 | 86,099 | (85,206)
Favorable/(unfavorable) change in credit valuation adjustment recognized in other non-interest income | 1,809 | 1,431 | (1,516)
Hedging derivatives | Economic Hedging | Risk Participation Agreements |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | (521) | (233) | 345
Hedging derivatives | Economic Hedging | Forward Commitments |  |  |
Derivative [Line Items] |  |  |
Realized gain (loss) in discontinued operations | 0 | 0 | (8,205)
Hedging derivatives | Economic Hedging | Forward Commitments | Noninterest Income |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | (126) | (186) | 0
Hedging derivatives | Economic Hedging | Forward Commitments | Discontinued operations |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | 0 | 0 | 547
Non-hedging derivatives: | Commitments to Lend |  |  |
Derivative [Line Items] |  |  |
Realized gain in other non-interest income | 462 | 2,854 | 0
Realized gain (loss) in discontinued operations | 0 | 0 | 15,672
Non-hedging derivatives: | Commitments to Lend | Noninterest Income |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | (107) | (611) | 0
Non-hedging derivatives: | Commitments to Lend | Discontinued operations |  |  |
Derivative [Line Items] |  |  |
Unrealized gain/(loss) recognized in other non-interest income | $ 0 | $ 0 | $ (1,893)

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- Definition The favorable changes in credit valuation adjustments on derivative instruments that were recognized in other non-interest income during the current period. + References No definition available. + Details
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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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- Definition Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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