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Fair Value - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Average capitalization rate 7.20%  
Additions $ 2.0  
Paydowns and chargeoffs 0.3  
Collateral-Dependent Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of impaired loans 9.9 $ 8.8
Specific reserve on collateral dependent loans 6.3 $ 7.7
Other Real Estate Owned    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Paydowns and chargeoffs 1.2  
Reductions related to sale of loans $ 0.7