RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Related Party Transactions [Line Items]
Deposit liabilities	$ 36,000	$ 28,400
Rent expense	1,000	1,000
Fee income	97,228	68,051
Management \| Wealth management group fee income \| Operating Segments \| Trust Services
Related Party Transactions [Line Items]
Fee income	600	600
1365 New Scotland Road, Slingerlands, New York \| Director
Related Party Transactions [Line Items]
Rent expense		25
2 Rush Street, Schenectady, New York
Related Party Transactions [Line Items]
Monthly rent expense	9	8
2 Rush Street, Schenectady, New York \| Director
Related Party Transactions [Line Items]
Rent expense	$ 118	$ 102
Minimum
Related Party Transactions [Line Items]
Related party principal ownership threshold (percent)	10.00%

Operating Lease, Monthly Rent Expense

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- Definition

For a designation as a related party, the threshold percentage of principal ownership in an entity, above which the party is considered a related party..

+ References

No definition available.

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- Definition

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
-Publisher FASB
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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
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- Definition

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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