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Subordinated Notes (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 13, 2020
Mar. 31, 2021
Jun. 20, 2016
Subordinated Notes      
Subordinated Notes      
Face amount     $ 25.0
Interest rate     6.00%
Redemption price percentage of outstanding principal amount   100.00%  
Subordinated Notes | LIBOR      
Subordinated Notes      
Variable interest rate (as a percent)   4.87%  
Subordinated Notes due 2030      
Subordinated Notes      
Face amount $ 20.0    
Interest rate 4.875%    
Term for fixed interest rate 5 years    
Subordinated Notes due 2030 | 3-month SOFR      
Subordinated Notes      
Variable interest rate (as a percent) 4.71%    
Subordinated debt due June 30, 2021      
Subordinated Notes      
Repayments of debt $ 25.0    
Minimum | Subordinated Notes      
Subordinated Notes      
Notice period for redeem the subordinated notes   30 days  
Maximum | Subordinated Notes      
Subordinated Notes      
Notice period for redeem the subordinated notes   60 days