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SECURITIES, Amortized Cost and Fair Value of Securities Held-to-maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Debt Securities, Held-to-maturity, Maturity, Amortized Cost [Abstract]    
Amortized Cost $ 11,137 $ 10,020
Gross Unrealized Gains 275 324
Gross Unrecognized Losses (36) 0
Estimated Fair Value 11,376 10,344
Obligations of States and Political Subdivisions [Member]    
Debt Securities, Held-to-maturity, Maturity, Amortized Cost [Abstract]    
Amortized Cost 11,135 10,018
Gross Unrealized Gains 275 324
Gross Unrecognized Losses (36) 0
Estimated Fair Value 11,374 10,342
Agency Mortgage-backed Securities, Residential [Member]    
Debt Securities, Held-to-maturity, Maturity, Amortized Cost [Abstract]    
Amortized Cost 2 2
Gross Unrealized Gains 0 0
Gross Unrecognized Losses 0 0
Estimated Fair Value $ 2 $ 2