FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Individually evaluated loans	$ 15,513	$ 16,477
Capitalized servicing rights	6,570	6,845
Premises held for sale	252	252
Total	22,335	23,574
Quoted prices for similar loans in active markets
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Individually evaluated loans	11,945	13,587
Discount Cash Flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Individually evaluated loans	$ 3,568	$ 2,890
Impaired loans \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Loss severity	10.00%	1.00%
Appraised value	$ 80	$ 80
Cash flows	$ 3	$ 100
Discount rate	3.38%	3.63%
Impaired loans \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Loss severity	70.00%	40.00%
Appraised value	$ 2,941	$ 3,859
Cash flows	$ 707	$ 539
Discount rate	6.38%	6.38%
Capitalized servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Constant prepayment rate	7.19%	7.29%
Discount rate	9.54%	9.54%
Assets held for sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Premises held for sale	$ 252	$ 252
Selling Costs	6.00%	6.00%
Assets held for sale \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items}
Appraised value	$ 267	$ 267

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Fair Value Inputs, Cash Flow

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Fair Value Inputs, Selling Costs

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of assets classified as held for sale.

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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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- Definition

The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

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Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

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