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DERIVATIVE FINANCIAL INSTRUMENTS - (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Asset pledged
Derivative Financial Instruments
Available-for-sale securities pledged as collateral	$ 9,145,000
Interest rate swap agreements
Derivative Financial Instruments
Aggregate notional amount	129,416,000	$ 135,740,000
Asset Derivatives, Notional Amount	64,708,000	67,870,000
Asset Derivatives, Fair Value	3,933,000	6,566,000
Liability Derivatives, Notional Amount	64,708,000	67,870,000
Liability Derivatives, Fair Value	3,933,000	$ 6,566,000
Derivatives not designated as hedging instruments | Interest rate swap agreements
Derivative Financial Instruments
Interest rate swap	0		$ 0
Increase (decrease) in interest income	$ (338,000)

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- Definition

Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Nominal or face amount used to calculate payments on the derivative asset.

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Nominal or face amount used to calculate payments on the derivative liability.

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The increase (decrease) during the reporting period in net unamortized loan origination fees and other fees that are collected at origination but recorded as income over the life of the loan.

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