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Other Borrowings - Additional Information (Details) - USD ($)
6 Months Ended
Oct. 10, 2019
Jun. 30, 2022
Dec. 31, 2021
Oct. 13, 2016
Line Of Credit Facility [Line Items]        
Federal Reserve Bank discount window borrowing   $ 0 $ 0  
Federal home loan bank advances maximum borrowing capacity as percentage of total assets   35.00%    
Federal home loan bank, required investment conversion ratio   4.50    
Federal funds purchased   $ 45,000,000 0  
Line of credit facility, amount   0 0  
Federal Home Loan Bank fixed rate advances   400,000,000.0    
Federal Home Loan Bank Variable Rate Advances   $ 250,000,000.0    
Federal Home Loan Bank, Advances, Interest Rate   1.32%    
Minimum        
Line Of Credit Facility [Line Items]        
Federal home loan bank advances, Fixed interest rate   1.63%    
Federal home loan bank fixed rate advances, maturity date   2022-08    
Federal fund purchase interest rate   2.00%    
Maximum        
Line Of Credit Facility [Line Items]        
Federal home loan bank advances, Fixed interest rate   2.09%    
Federal home loan bank fixed rate advances, maturity date   2022-09    
Federal fund purchase interest rate   2.15%    
Correspondent Bank | Credit agreement | Ridgestone        
Line Of Credit Facility [Line Items]        
Line of credit facility, amount       $ 30,000,000.0
Correspondent Bank | Fourth Amendment Revolving Credit Agreement | Ridgestone        
Line Of Credit Facility [Line Items]        
Line of credit facility, amount   $ 0 $ 0 $ 15,000,000.0
Line of credit facility, extended maturity date Oct. 07, 2022      
Line of credit facility, interest rate terms   The amended revolving line of credit bears interest at either LIBOR plus 195 basis points or the Prime Rate minus 75 basis points, not to be less than 2.00%, based on the Company’s election, which is required to be communicated at least three business days prior to the commencement of an interest period. If the Company fails to provide timely notification, the interest rate will be Prime Rate minus 75 basis points. At June 30, 2022 and December 31, 2021, the line of credit had no outstanding balance.    
Correspondent Bank | Amended Credit Agreement | Ridgestone | LIBOR Rate        
Line Of Credit Facility [Line Items]        
Interest rate spread 1.95%      
Correspondent Bank | Amended Credit Agreement | Ridgestone | Prime Rate        
Line Of Credit Facility [Line Items]        
Interest rate spread 0.75%