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Federal Funds Purchased and Repurchase Agreements (Tables)
 12 Months Ended
Dec. 31, 2019
Brokers and Dealers [Abstract]  
Summary of Information Concerning Securities Sold under Agreements to Repurchase Information concerning securities sold under agreements to repurchase is summarized as follows:
201920182017
Average daily balance during the year$—  $11,302  $32,428  
Average interest rate during the year— %1.29 %0.85 %
Maximum month-end balance during the year$—  $36,071  $33,989  
Weighted average interest rate at year end— %— %1.14 %