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Allowance for Credit Losses - Summary of Company's Allowance for Loan Losses ("All") and Recorded Investment in Loans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance $ 96,457 $ 92,581 $ 97,947 $ 89,553 $ 89,553
Charge-offs (3,505) (540) (8,387) (1,218) (1,575)
Recoveries 95 280 781 386  
Provision expense (release) for credit losses 2,000 1,125 4,706 4,725  
Ending balance 95,047 93,446 95,047 93,446 97,947
Commercial          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance     45,304 37,608 37,608
Charge-offs     (2,954) (242) (277)
Recoveries     352 286  
Provision expense (release) for credit losses     3,548 7,639  
Ending balance 46,250 45,291 46,250 45,291 45,304
Non-owner occupied commercial real estate          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance     32,665 32,050 32,050
Charge-offs     (4,715)    
Recoveries     7 3  
Provision expense (release) for credit losses     99 (3,585)  
Ending balance 28,056 28,468 28,056 28,468 32,665
Residential real estate          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance     19,550 19,306 19,306
Charge-offs       (46) (48)
Recoveries     95 19  
Provision expense (release) for credit losses     755 12  
Ending balance 20,400 19,291 20,400 19,291 19,550
Consumer          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance     428 589 589
Charge-offs     (718) (930) (1,250)
Recoveries     327 78  
Provision expense (release) for credit losses     304 659  
Ending balance 341 396 341 396 $ 428
Commercial          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance 48,910 42,058      
Charge-offs (2,930) (239)      
Recoveries 60 241      
Provision expense (release) for credit losses 210 3,231      
Ending balance 46,250 45,291 46,250 45,291  
Residential real estate          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance 19,759 19,331      
Recoveries 5 7      
Provision expense (release) for credit losses 636 (47)      
Ending balance 20,400 19,291 20,400 19,291  
Consumer          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance 376 424      
Charge-offs (282) (301)      
Recoveries 30 31      
Provision expense (release) for credit losses 217 242      
Ending balance 341 396 341 396  
Non-owner occupied commercial real estate          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning balance 27,412 30,768      
Charge-offs (293)        
Recoveries   1      
Provision expense (release) for credit losses 937 (2,301)      
Ending balance $ 28,056 $ 28,468 $ 28,056 $ 28,468