ACQUISITIONS - Loans acquired (Details) $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($)
Steuben Trust Corporation [Member] \| Acquired Impaired
Certain loans acquired during the period:
Par value of PCD loans at acquisition	$ 2,184
Allowance for credit losses at acquisition	(71)
Non-credit premium at acquisition	(81)
Fair value of PCD loans at acquisition	2,032
Elmira Savings Bank ("Elmira") \| Non-PCD Loans
Certain loans acquired during the period:
Unpaid principal balance	455,700
Net discount	$ 20,800

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Allowance for credit losses at acquisition at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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- Definition

Par value of loans at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

No definition available.

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Non-credit (discount) premium at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of discount on fair value adjustment of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Fair value at acquisition of acquired loans.

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Amount at par value of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-19

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