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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructurings Additional Information (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) loan loans	Dec. 31, 2022 USD ($) loan
Financing Receivable, Past Due [Line Items]
Number of loans classified as TDRs | loan	7	15
Aggregate balance	$ 3,500	$ 16,100
Loans receivable	7,651
Accruing TDRs	100	2,700
Non-accruing TDRs	3,400	$ 13,400
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans receivable	3,900
Commercial
Financing Receivable, Past Due [Line Items]
Loans receivable	4,564
Modified loans paid down	$ 7,800
Modified loans paid down, number of loans | loans	3
Charge offs on modified loans	$ 1,200
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 4,564

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