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Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Financial Assets    
Debt securities held-to-maturity $ 774,706 $ 638,640
Time deposits with other banks 4,481 0
Loans, net 6,595,516 5,841,714
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Debt securities held-to-maturity 0 0
Time deposits with other banks 0  
Loans, net 0 0
Financial Liabilities    
Deposit liabilities 0 0
Subordinated debt 0 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Financial Assets    
Debt securities held-to-maturity 645,439 627,398
Time deposits with other banks 4,266  
Loans, net 0 0
Financial Liabilities    
Deposit liabilities 0 0
Subordinated debt 69,552 69,348
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Financial Assets    
Debt securities held-to-maturity 0 0
Time deposits with other banks 0  
Loans, net 6,525,588 5,907,447
Financial Liabilities    
Deposit liabilities 8,753,505 8,067,995
Subordinated debt 0 0
Carrying Value | Fair Value, Measurements, Recurring    
Financial Assets    
Debt securities held-to-maturity 774,706 638,640
Time deposits with other banks 4,481  
Loans, net 6,589,526 5,833,271
Financial Liabilities    
Deposit liabilities 8,765,414 8,067,589
Subordinated debt $ 71,857 $ 71,646