Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS (Consideration Transferred) (Details)

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ACQUISITIONS (Consideration Transferred) (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 01, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Business Acquisition [Line Items]        
Purchase price consideration   $ 505,746    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Total assets   2,946,897 $ 0 $ 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Total liabilities   2,730,266 0 $ 0
Preliminary goodwill   1,214,053 925,211  
American National        
Business Acquisition [Line Items]        
Purchase price consideration $ 505,473      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Cash and cash equivalents 55,060      
Securities AFS 507,764      
LHFS 2,611      
LHFI 2,151,517      
Premises and equipment 35,802      
Core deposit intangibles and other intangibles 84,687      
Bank owned life insurance 30,627      
Other assets 78,829      
Total assets 2,946,897      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Deposits 2,583,089      
Short-term borrowings 98,336      
Long-term borrowings 25,890      
Other liabilities 22,951      
Total liabilities 2,730,266      
Fair value of net assets acquired 216,631      
Preliminary goodwill $ 288,842 $ 288,842 $ 0