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Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Loans and Allowances for Loan Losses    
Impaired loans individually evaluated for impairment $ 34,746 $ 37,335
Impaired loans were evaluated based on the fair value of the loan's collateral 31,200 32,200
Individually evaluated for impairment 4,932 5,113
Impaired loans with no reserve allocation $ 11,868 $ 11,946
Impaired loans required no reserve allocation, percentage 34.00% 32.00%