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SECURITIES - Narrative (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
bonds
debt_security
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Investment [Line Items]      
Debt Securities, Held-to-maturity, Nonaccrual $ 0 $ 0  
Interest receivable 46,724,000 50,489,000  
Transferred Securities, Unrealized Loss, Before Tax 105,100,000 113,500,000  
Securities Transferred, Unrealized Loss, Net Of Tax 83,000,000.0 89,700,000  
Fair value of securities transferred from AFS to HTM 0 0  
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]      
Net gain (loss) on sale of securities available for sale (2,510,000) (15,976,000) $ (3,819,000)
Gross realized gains on AFS securities 88,000 2,000,000.0  
Gross realized loss on AFS securities 6,100,000 24,500,000  
Gain (loss) on hedging activity 3,500,000 6,500,000  
Equity investments 9,467,000 9,691,000  
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract]      
Proceeds from sale of held-to-maturity securities 0 0 0
Debt Securities, Available-for-sale, Allowance for Credit Loss 0 0  
Other-than-temporarily impaired equity investments 0    
FHLB Stock with other-than-temporary impairment 0    
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) $ 0 0  
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | debt_security 421    
Net gain on sale of equity securities $ 0 5,058,000 0
Held-To-Maturity Securities, Number Of Bonds Below Investment Grade | bonds 2    
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss $ 13,600,000 15,400,000  
U.S. Treasury 8,538,000 11,331,000 $ 271,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss $ 12,900,000 $ 13,700,000  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest receivable Interest receivable  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest receivable Interest receivable  
Asset Pledged as Collateral      
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract]      
Debt Securities $ 2,180,000,000 $ 2,280,000,000  
Asset Pledged As Collateral, Excess Amount      
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract]      
Debt Securities 431,700,000 213,100,000  
Financial Asset, Past Due      
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract]      
Securities HTM (estimated fair value of $138,879) $ 0 $ 0