v3.25.2
Mergers and Acquisitions - Summary of the Allocation of Purchase Price to Assets and Liabilities Acquired (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Apr. 01, 2025
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Purchase Price:        
Value of stock paid   $ 1,059,911 $ 0  
Increase (decrease) to net assets as a result of fair value adjustments to assets acquired and liabilities assumed:        
Goodwill resulting from merger   $ 1,419,782 $ 991,665 $ 988,898
The First        
Purchase Price:        
Shares issued to common shareholders (in shares) 31,238,172      
Purchase price per share (usd per share) $ 33.93      
Value of stock paid $ 1,059,911      
Cash settlement for stock options, net of tax benefit 1,869      
Total purchase price 1,061,780      
Net Assets Acquired:        
Stockholders’ equity at acquisition date 993,475      
Increase (decrease) to net assets as a result of fair value adjustments to assets acquired and liabilities assumed:        
Securities (71,772)      
Loans, including loans held for sale (152,153)      
Premises and equipment (1,596)      
Intangible assets (169,809)      
Other real estate owned 2,696      
Other assets (15,807)      
Deposits 7,391      
Borrowings 2,902      
Other liabilities 15,903      
Deferred income taxes 19,666      
Total net assets acquired 630,896      
Goodwill resulting from merger $ 430,884