This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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

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ACQUISITIONS, Intangible Asset, Goodwill and Acquisition-related Expenses (Details) - USD ($) $ in Thousands		3 Months Ended
	Jul. 12, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Fair Value of Subordinated Notes Payable [Abstract]
Subordinated notes payable		$ 13,775		$ 13,795
Summary of loans acquired [Abstract]
Merger and acquisition integration related (recoveries) expenses		$ 369	$ 534
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
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
Kinderhook Bank Corp [Member] \| Core Deposits [Member]
Intangible Assets [Abstract]
Estimated useful life		8 years
Kinderhook Bank Corp [Member] \| Other Intangibles [Member]
Intangible Assets [Abstract]
Estimated useful life		8 years