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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Mar. 31, 2020
Business Acquisition [Line Items]        
Federal taxes calculated at statutory rate, percent 21.00% 21.00%    
Acquired net operating losses $ 3,644   $ 1,370  
Federal        
Business Acquisition [Line Items]        
Net operating loss carryforwards 6,602      
State        
Business Acquisition [Line Items]        
Net operating loss carryforwards $ 17,560      
Franklin Financial Network, Inc.        
Business Acquisition [Line Items]        
Acquired net operating losses     $ 6,523 $ 6,523