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Deposits - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Banking and Thrift [Abstract]    
Interest on time accounts $ 595 $ 542
Held-to-maturity securities pledged as collateral 126,600  
Deposit overdrafts reclassified as loan balances 155 131
Related party deposit liabilities $ 39,600 $ 33,300