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Stockholders' Equity - Stock Rollforward (Details) - shares
 9 Months Ended
Apr. 30, 2023
Sep. 30, 2023
Increase (Decrease) in Stock by Class [Roll Forward]    
Common stock, beginning of period (in shares)   29,857,920
Treasury stock, beginning of period (in shares)   1,643,461
Changes related to deferred compensation plan for Boards of Directors:    
Common stock, end of period (in shares)   36,723,893
Treasury stock, end of period (in shares)   1,412,650
Common Shares    
Increase (Decrease) in Stock by Class [Roll Forward]    
Common stock, beginning of period (in shares)   29,857,920
Changes related to stock-based compensation awards:    
Release of restricted common shares (in shares)   0
Cancellation of restricted common shares (in shares)   0
Grant of common shares (in shares)   0
Changes related to deferred compensation plan for Boards of Directors:    
Purchase of treasury stock (in shares)   0
Disbursed out of treasury stock (in shares)   0
Common shares issued under dividend reinvestment plan (in shares)   38,305
Common shares issued under compensation plan for Boards of Directors (in shares)   0
Common shares issued under employee stock purchase plan (in shares)   0
Common stock, end of period (in shares)   36,723,893
Common Shares | Limestone Bancorp, Inc.    
Changes related to deferred compensation plan for Boards of Directors:    
Issuance of common shares related to the merger with Limestone Bancorp, Inc. (in shares) 6,827,668 6,827,668
Common Shares | Restricted Shares    
Changes related to stock-based compensation awards:    
Grant of common shares (in shares)   0
Treasury Stock    
Increase (Decrease) in Stock by Class [Roll Forward]    
Treasury stock, beginning of period (in shares)   1,643,461
Changes related to stock-based compensation awards:    
Release of restricted common shares (in shares)   34,710
Cancellation of restricted common shares (in shares)   15,726
Grant of common shares (in shares)   (1,900)
Changes related to deferred compensation plan for Boards of Directors:    
Purchase of treasury stock (in shares)   15,737
Disbursed out of treasury stock (in shares)   (4,368)
Common shares issued under dividend reinvestment plan (in shares)   0
Common shares issued under compensation plan for Boards of Directors (in shares)   (15,827)
Common shares issued under employee stock purchase plan (in shares)   (25,244)
Treasury stock, end of period (in shares)   1,412,650
Treasury Stock | Limestone Bancorp, Inc.    
Changes related to deferred compensation plan for Boards of Directors:    
Issuance of common shares related to the merger with Limestone Bancorp, Inc. (in shares)   0
Treasury Stock | Restricted Shares    
Changes related to stock-based compensation awards:    
Grant of common shares (in shares)   (249,645)