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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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ACQUISITIONS - Intangible Asset, Goodwill and Acquisition-related Expenses (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 12, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value of Subordinated Notes Payable [Abstract]
Subordinated notes payable		$ 3,277	$ 3,303
Summary of loans acquired [Abstract]
Merger and acquisition integration related (recoveries) expenses		$ 701	4,933	$ 8,608
Kinderhook Bank Corp [Member] \| Core deposit intangibles
Finite-Lived Intangible Assets, Net [Abstract]
Intangible asset useful life (amortization period)		8 years
Kinderhook Bank Corp [Member] \| Other intangibles
Finite-Lived Intangible Assets, Net [Abstract]
Intangible asset useful life (amortization period)		8 years
Kinderhook Bank Corp [Member] \| Subordinated Notes Maturing in February 2028 [Member]
Fair Value of Subordinated Notes Payable [Abstract]
Subordinated notes payable	$ 3,000
Fixed interest rate percentage	6.00%
Maturity date	Feb. 29, 2028
Kinderhook Bank Corp [Member] \| Subordinated Notes Maturing in November 2025 [Member]
Fair Value of Subordinated Notes Payable [Abstract]
Subordinated notes payable	$ 10,000
Fixed interest rate percentage	6.375%
Maturity date	Nov. 30, 2025
Steuben Trust Corporation [Member]
Summary of loans acquired [Abstract]
Merger and acquisition integration related (recoveries) expenses		$ 700	$ 4,900	$ 8,600
Fringe Benefits Design of Minnesota, Inc ("FBD") [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible asset useful life (amortization period)		15 years
Thomas Gregory Associates [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible asset useful life (amortization period)		13 years