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Nature of Operations and Summary of Significant Accounting Policies (Details) - USD ($)
Sep. 17, 2019
Aug. 19, 2019
Jun. 30, 2020
Dec. 31, 2019
Subsidiary, Sale of Stock [Line Items]        
Cash and cash equivalents held at the Federal Reserve Bank of Kansas City     $ 126,000,000  
Required reserve     0  
Cash collateral     31,000,000  
Loans reviewed on a collective basis     4,429,241,000 $ 3,861,707,000
Performing | Substandard        
Subsidiary, Sale of Stock [Line Items]        
Loans reviewed on a collective basis     199,595,000 $ 47,221,000
London Interbank Offered Rate (LIBOR)        
Subsidiary, Sale of Stock [Line Items]        
Loans tied to LIBOR     $ 1,000,000,000  
IPO        
Subsidiary, Sale of Stock [Line Items]        
Shares sold and issued (in shares)   5,750,000    
Price of stock per share (in dollars per share)   $ 14.50    
Total proceeds on sale of stock   $ 76,000,000    
Stockholders Public Offering        
Subsidiary, Sale of Stock [Line Items]        
Shares sold and issued (in shares)   1,261,589    
Price of stock per share (in dollars per share)   $ 14.50    
Over-Allotment Option        
Subsidiary, Sale of Stock [Line Items]        
Shares sold and issued (in shares) 844,362      
Price of stock per share (in dollars per share) $ 14.50      
Total proceeds on sale of stock $ 11,000,000