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Time Deposits and Related Party Deposits - Narrative (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Banking and Thrift [Abstract]    
Deposits received from officers and directors $ 4,400,000 $ 1,300,000
Time deposits of $250,000 or more 375,700,000 442,200,000
Deposit overdrafts 500,000 700,000
FDIC insurance limit for insured deposits 250,000  
Brokered deposits $ 20,200,000 $ 86,100,000