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Other Borrowings and Long Term Debt - Subordinated Debt (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Other Borrowings and Long-Term Debt    
Subordinated debt, net $ 74,024 $ 73,807
Subordinated Debt    
Other Borrowings and Long-Term Debt    
Aggregate principal amount 75,000 75,000
Less debt issuance costs 976 1,193
Subordinated debt, net 74,024 73,807
Subordinated Debt | Floating rate 10 year capital securities, with interest paid semi-annually at an annual fixed rate of 5.50% until September 1, 2025    
Other Borrowings and Long-Term Debt    
Aggregate principal amount $ 75,000 $ 75,000
Debt instrument term 10 years  
Annual fixed rate 5.50%