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DERIVATIVE FINANCIAL INSTRUMENTS (Other free standing derivatives narrative) (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Derivative [Line Items]    
Cash pledged as collateral $ 2,700,000 $ 3,800,000
Counterparties    
Derivative [Line Items]    
Cash pledged as collateral 0 0
Not Designated as Hedging Instrument    
Derivative [Line Items]    
Cash pledged as collateral 0 0
Not Designated as Hedging Instrument | Counterparties    
Derivative [Line Items]    
Cash pledged as collateral $ 0 $ 0