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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 2,266,836,000			$ 2,151,232,000
SBA, loan guarantee, percentage	100.00%
Amount of loan on which review have been made annually	$ 1,000,000
Amount of loan on which reviews require approval	$ 500,000
Loans that are deemed impaired, number of days past due (more than)	90 days
Appraisals, required period interval	18 months
Minimum amount on which annual updated appraisals for classified loans is required	$ 250,000
Allowance for credit loss impact of adoption	28,278,000	$ 28,383,000		25,178,000
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss impact of adoption			$ 2,423,000	2,423,000
PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 8,800,000
Maximum
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of loan-to-value ratio upon loan origination	80.00%
Percentage of loan-to-value ratios of the value of the real estate taken as collateral	85.00%
Percentage of strong loan-to-value (or lower)	70.00%
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss impact of adoption	$ 25,447,000	25,784,000
Commercial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss impact of adoption				3,740,000
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	374,190,000			357,774,000
Commercial and industrial | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss impact of adoption	5,558,000	$ 5,854,000
Commercial and industrial | Commercial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss impact of adoption				928,000
SBA | Commercial | 2021 Payment Deferrals
Financing Receivable, Allowance for Credit Losses [Line Items]
PPP Loan processing fee income	88,000
PPP loans, allowance	0
SBA | Commercial and industrial | SBA PPP Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 6,200,000			$ 13,800,000

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