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Securities (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
security
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
security
Available-for-Sale Investment Securities Portfolios [Abstract]      
Amortized cost $ 9,715   $ 10,232
Gross unrealized gains 334   466
Gross unrealized losses (26)   0
Fair value 10,023   10,698
Securities pledged to secure public deposits 0   0
Securities of any one issuer, other than U.S. Government, exceeding 10% of stockholders' equity 0   $ 0
Purchase of securities 0 $ 0  
Sales of securities $ 0 $ 0  
Number of securities held with unrealized gains | security 23   29
Number of securities held with unrealized losses | security 4   0
Federal Agency Mortgage-backed Securities [Member]      
Available-for-Sale Investment Securities Portfolios [Abstract]      
Amortized cost $ 5,033   $ 5,550
Gross unrealized gains 228   257
Gross unrealized losses 0   0
Fair value $ 5,261   5,807
Number of securities held | security 20    
Estimated average remaining life 3 years 4 months 24 days    
Federal Agency Debt [Member]      
Available-for-Sale Investment Securities Portfolios [Abstract]      
Amortized cost $ 2,682   2,682
Gross unrealized gains 100   190
Gross unrealized losses 0   0
Fair value $ 2,782   2,872
Number of securities held | security 2    
Estimated average remaining life 4 years 4 months 24 days    
Municipal Bonds [Member]      
Available-for-Sale Investment Securities Portfolios [Abstract]      
Amortized cost $ 2,000   2,000
Gross unrealized gains 6   19
Gross unrealized losses (26)   0
Fair value $ 1,980   $ 2,019
Number of securities held | security 5    
Estimated average remaining life 6 years 6 months