ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Financial Effect of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,931	$ 4,527
Percentage of loans receivable	0.06%	0.09%
Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,000	$ 2,000
Combination Principal Forgiveness, Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	0	1,596
Commercial and Industrial Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,931	$ 4,527
Percentage of loans receivable	0.21%	0.32%
Commercial and Industrial Loans \| Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,000	$ 2,000
Commercial and Industrial Loans \| Combination Principal Forgiveness, Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	0	1,596
Commercial and Industrial Loans \| Working capital lines of credit loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,931	$ 2,931
Percentage of loans receivable	0.50%	0.50%
Commercial and Industrial Loans \| Working capital lines of credit loans \| Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial and Industrial Loans \| Working capital lines of credit loans \| Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 2,000	$ 2,000
Interest Rate Reduction Financial Effect	1.00%	1.00%
Commercial and Industrial Loans \| Working capital lines of credit loans \| Interest Rate Reduction \| Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest Rate Reduction Financial Effect	1.00%	1.00%
Commercial and Industrial Loans \| Working capital lines of credit loans \| Interest Rate Reduction \| Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest Rate Reduction Financial Effect	1.00%	1.00%
Commercial and Industrial Loans \| Working capital lines of credit loans \| Extended Maturity \| Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Term Extension Financial Effect	12 months	12 months
Commercial and Industrial Loans \| Working capital lines of credit loans \| Extended Maturity \| Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Term Extension Financial Effect	120 months	120 months
Commercial and Industrial Loans \| Working capital lines of credit loans \| Combination Principal Forgiveness, Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 0	$ 0
Percentage of loans receivable	0.50%	0.50%
Commercial and Industrial Loans \| Non-working capital loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 0	$ 1,596
Percentage of loans receivable	0.00%	0.20%
Commercial and Industrial Loans \| Non-working capital loans \| Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 0	$ 9,380
Commercial and Industrial Loans \| Non-working capital loans \| Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	0	$ 0
Commercial and Industrial Loans \| Non-working capital loans \| Interest Rate Reduction \| Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest Rate Reduction Financial Effect		0.75%
Commercial and Industrial Loans \| Non-working capital loans \| Interest Rate Reduction \| Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest Rate Reduction Financial Effect		1.00%
Commercial and Industrial Loans \| Non-working capital loans \| Extended Maturity \| Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Term Extension Financial Effect		40 months
Commercial and Industrial Loans \| Non-working capital loans \| Extended Maturity \| Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Term Extension Financial Effect		300 months
Commercial and Industrial Loans \| Non-working capital loans \| Combination Principal Forgiveness, Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Forgiveness	$ 0	$ 1,596
Percentage of loans receivable	0.00%	0.20%

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

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Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

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