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LOANS AND ALLOWANCE FOR CREDIT LOSSES - AMORTIZED COST OF LOANS AND LEASES (Details)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) loan	Jun. 30, 2022 USD ($) loan	Jun. 30, 2023 USD ($) loan	Dec. 31, 2022 loan
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan	2	2	2
Recorded Investment with payment default	$ 168,000	$ 24,000	$ 168,000
Accruing number of contracts | loan	423		424
Accruing recorded investments	$ 91,000		$ 93,000
Nonaccruing number of contracts | loan	10		17
Nonaccruing recorded investments	$ 690,000		$ 1,327,000
Accruing percentage of total financing receivables			0.00%
Nonaccruing percentage of total financing receivables	0.01%		0.03%
Number of Loans | loan				2,475
Current
Financing Receivable, Modifications [Line Items]
Accruing recorded investments	$ 91,000		$ 93,000
Nonaccruing recorded investments	522,000		1,159,000
90 + Days Delinquent
Financing Receivable, Modifications [Line Items]
Nonaccruing recorded investments	$ 168,000		$ 168,000
Republic Processing Group
Financing Receivable, Modifications [Line Items]
Accruing number of contracts | loan	423		424
Accruing recorded investments	$ 91,000		$ 93,000
Accruing percentage of total financing receivables	0.08%		0.08%
Republic Processing Group | Current
Financing Receivable, Modifications [Line Items]
Accruing recorded investments	$ 91,000		$ 93,000
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan				150
Residential real estate | Residential Real Estate - Owner Occupied
Financing Receivable, Modifications [Line Items]
Nonaccruing number of contracts | loan	6		12
Nonaccruing recorded investments	$ 547,000		$ 1,113,000
Nonaccruing percentage of total financing receivables	0.05%		0.10%
Residential real estate | Residential Real Estate - Owner Occupied | Current
Financing Receivable, Modifications [Line Items]
Nonaccruing recorded investments	$ 379,000		$ 945,000
Residential real estate | Residential Real Estate - Owner Occupied | 90 + Days Delinquent
Financing Receivable, Modifications [Line Items]
Nonaccruing recorded investments	$ 168,000		$ 168,000
Residential real estate | Home equity
Financing Receivable, Modifications [Line Items]
Nonaccruing number of contracts | loan	4		5
Nonaccruing recorded investments	$ 143,000		$ 214,000
Nonaccruing percentage of total financing receivables	0.06%		0.08%
Residential real estate | Home equity | Current
Financing Receivable, Modifications [Line Items]
Nonaccruing recorded investments	$ 143,000		$ 214,000
Rate reduction | Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan				70
Term Extension
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan			2
Recorded Investment with payment default			$ 261,000
Nonaccruing number of contracts | loan			2
Nonaccruing recorded investments			$ 261,000
Term Extension | Residential real estate | Residential Real Estate - Owner Occupied
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan			2
Recorded Investment with payment default			$ 261,000
Principal deferral
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan	433		439
Recorded Investment with payment default	$ 781,000		$ 1,159,000
Accruing number of contracts | loan	423		424
Accruing recorded investments	$ 91,000		$ 93,000
Nonaccruing number of contracts | loan	10		15
Nonaccruing recorded investments	$ 690,000		$ 1,066,000
Principal deferral | Republic Processing Group
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan	423		424
Recorded Investment with payment default	$ 91,000		$ 93,000
Principal deferral | Home equity
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan	4
Recorded Investment with payment default	$ 143,000
Principal deferral | Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan				7
Principal deferral | Residential real estate | Residential Real Estate - Owner Occupied
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan	6		10
Recorded Investment with payment default	$ 547,000		$ 852,000
Principal deferral | Residential real estate | Home equity
Financing Receivable, Modifications [Line Items]
Number of Loans with payment default | loan			5
Recorded Investment with payment default			$ 214,000

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