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SUBORDINATED DEFERRABLE INTEREST DEBENTURES - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended
Mar. 31, 2020
Dec. 31, 2021
Securities Financing Transaction [Line Items]    
Employee stock trust   $ 4.7
First National Banc Statutory Trust One    
Securities Financing Transaction [Line Items]    
Trust preferred securities, redemption amount $ 5.2  
Trust preferred securities interest rate 4.74%