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Nature of Operations - Additional Information (Details)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jan. 20, 2021
USD ($)
$ / shares
shares
Jun. 30, 2022
shares
Jun. 30, 2021
shares
Jun. 30, 2022
shares
Jun. 30, 2021
shares
Sep. 30, 2020
Basis Of Presentation [Line Items]            
Sale of stock, gross proceeds $ 37.1          
Sale of stock, number of common stock issued | shares 3,701,509          
Sale of stock, price per share | $ / shares $ 10.00          
Cash contributions to Employee Stock Ownership Plan ("ESOP") $ 3.0          
Employee stock ownership plan per share | $ / shares $ 10.00          
Offering expenses $ 1.7          
Amount invested in bank operations $ 16.3          
Common stock exchange ratio 0.90686          
Stock Options            
Basis Of Presentation [Line Items]            
Options to purchase shares excluded from calculation of diluted earnings per common share | shares   13,454 0 13,454 0  
Community First Bancshares, MHC            
Basis Of Presentation [Line Items]            
Common stock ownership percentage 54.00%         54.00%