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Deposits - Narrative (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Deposits [Line Items]    
Certificates of deposits $ 164,472,000  
CD collateralized by FHLB letters of credit 0 $ 0
Securities pledged to collateralize certificates of deposit 0 0
Deposits held for related parties 1,600,000 2,700,000
CDARS    
Deposits [Line Items]    
Certificates of deposits 1,200,000 0
ICS    
Deposits [Line Items]    
Demand deposit accounts $ 44,400,000 $ 0