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General - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Accounting Policies [Abstract]    
Unrealized (loss) gain on debt securities available for sale $ (872) $ 50
Unamortized portion of unrealized loss related to debt securities available for sale transferred to securities held-to-maturity (97) (144)
Income tax benefit 25
Accumulated other comprehensive loss $ (969) $ (69)