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LOANS AND ALLOWANCE FOR CREDIT LOSSES ON LOANS (Composition of Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,058,413	$ 4,010,353
Commercial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,053,319	2,055,068
Commercial real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,349,463	1,292,443
Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	303,825	332,494
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	400,031	430,131
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,005,094	1,955,285
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,752,401	1,700,266
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	233,452	234,428
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 19,241	$ 20,591

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-4

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