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BORROWINGS (Details) - USD ($)
12 Months Ended
Mar. 08, 2017
Jul. 14, 2006
Dec. 07, 2005
Dec. 31, 2022
Dec. 31, 2021
Federal Home Loan Bank, Advances [Line Items]          
Available collateral to borrow an additional amount from FHLB       $ 984,400,000  
Interest rate       4.58%  
Redemption of subordinated debt       $ 24,712,000  
Subordinated Debt          
Federal Home Loan Bank, Advances [Line Items]          
Debt instrument face amount $ 25,000,000.0        
Maturity date Mar. 15, 2027        
Interest rate 6.25%        
Junior Subordinated Debt [Member]          
Federal Home Loan Bank, Advances [Line Items]          
Description of periodic payment       twenty consecutive quarterly payments  
Period for periodic payment       5 years  
Metbank Capital Trust I [Member]          
Federal Home Loan Bank, Advances [Line Items]          
Investment in common securities of the trust     $ 310,000    
Trust preferred securities issued     10,000,000.0    
Metbank Capital Trust I [Member] | Junior Subordinated Debt [Member]          
Federal Home Loan Bank, Advances [Line Items]          
Debt instrument face amount     $ 10,300,000    
Maturity date     Dec. 09, 2035    
Description of LIBOR rate basis     three-month LIBOR    
Interest rate during period       5.93% 1.97%
Metbank Capital Trust I [Member] | Junior Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR)          
Federal Home Loan Bank, Advances [Line Items]          
Basis spread on LIBOR variable rate     1.85%    
Metbank Capital Trust Two [Member]          
Federal Home Loan Bank, Advances [Line Items]          
Investment in common securities of the trust   $ 310,000      
Trust preferred securities issued   10,000,000      
Metbank Capital Trust Two [Member] | Junior Subordinated Debt [Member]          
Federal Home Loan Bank, Advances [Line Items]          
Debt instrument face amount   $ 10,300,000      
Maturity date   Oct. 07, 2036      
Description of LIBOR rate basis   3-month LIBOR      
Interest rate during period       6.08% 2.12%
Metbank Capital Trust Two [Member] | Junior Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR)          
Federal Home Loan Bank, Advances [Line Items]          
Basis spread on LIBOR variable rate   2.00%