GOODWILL, CORE DEPOSIT PREMIUM AND OTHER INTANGIBLE ASSETS (Narrative) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($) thirdParty	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)
Goodwill [Line Items]
Goodwill	$ 576,005	$ 576,005
Goodwill impairment		$ 0
Proceeds from sale of mortgage servicing rights	6,714		$ 0
Custodial escrow balances maintained	8,800
Mortgage Servicing Rights
Goodwill [Line Items]
Unpaid principal balance of loans	$ 698,500
Number of unrelated third-parties \| thirdParty	2
Sale of mortgage servicing rights	$ 7,654		$ 0
Proceeds from sale of mortgage servicing rights	6,700
Loss on disposition of intangible assets	193
Receivable due to the timing of servicing transfer	$ 746

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Servicing Asset, Unpaid Principal Balance of Underlying Loans

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Amount of gain (loss) on sale or disposal of intangible assets.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amounts due as of the balance sheet date of the sum of amounts receivable other than from customers.

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The cash inflow from the sale of servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating mortgage loans and then (a) transferring the loans to a Variable Interest Entity (VIE) in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.

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Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties.

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