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Federal Home Loan Bank Advances and Other Borrowings (Details)
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
Mar. 31, 2024
advance
Jun. 30, 2024
USD ($)
advance
Sep. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]          
FHLB advances $ 0     $ 0 $ 350,000,000
Other borrowings $ 454,762,000     $ 454,762,000 $ 271,821,000
Number Of Short-term Advances From Federal Home Loan Bank | advance   2 1    
Unsecured Subordinated Debenture Notes Due August Fifteenth Two Thousand Thirty Four          
Debt Instrument [Line Items]          
Stated interest rate (percent) 8.375%     8.375%  
Debt original amount $ 175,000,000     $ 175,000,000  
Proceeds from Issuance of Debt       171,211,000  
Origination costs $ 3,789,000     $ 3,789,000  
Basis spread on variable rate       4.605%  
Five Point Eight Seven Five Percent Subordinated Notes Due August 1, 2024          
Debt Instrument [Line Items]          
Stated interest rate (percent) 5.875%     5.875%  
Debt original amount $ 110,000,000     $ 110,000,000  
Federal Reserve's Bank Term Funding Program          
Debt Instrument [Line Items]          
Borrowings against line of credit $ 155,000,000   $ 70,000,000 $ 155,000,000  
Stated interest rate (percent) 4.88%     4.88%  
Line of Credit | Line of Credit          
Debt Instrument [Line Items]          
Line of Credit Facility, Periodic Payment, Principal $ 33,750,000        
Short-Term Debt, Maximum Amount Outstanding During Period       $ 0