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DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
derivativeInstrument
customer
broker
Dec. 31, 2020
USD ($)
bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash collateral held by counterparty for derivatives $ 260,000 $ 1,700,000
Cash collateral received from counterparty for derivatives $ 490,000 $ 0
Interest rate contract    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of derivatives | bank   1
Number of customers | customer 12  
Number of third-party brokers | broker 12  
Interest rate contract | Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Terminated derivative, notional amount $ 50,000,000  
Reclassification of realized losses from AOCI $ (398,000)  
Number of derivatives | derivativeInstrument 0  
Derivative, notional amount   $ 50,000,000
Interest rate contract | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative, notional amount $ 75,800,000 61,300,000
Risk Participation Agreement | Agent Bank    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Upfront fee received 53,000  
Derivative liabilities $ 15,900,000 $ 0