v3.26.3
DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
swap
risk_participation_Agreement
broker
customer
Sep. 30, 2025
USD ($)
swap
Sep. 30, 2026
USD ($)
swap
risk_participation_Agreement
broker
customer
Sep. 30, 2025
USD ($)
swap
risk_participation_Agreement
Dec. 31, 2025
USD ($)
customer
risk_participation_Agreement
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of swap terminations | swap 0     7  
Swap fee income $ 436 $ 816 $ 2,426 $ 1,879  
Number of matured swap agreement | swap 0     1  
Cash collateral held by counterparty for derivatives $ 21,700   21,700   $ 8,000
Cash collateral held from counterparties 17,900   17,900   0
Other income (824) $ (629) $ (2,070) $ (2,129)  
Interest rate swaps - commercial loans          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of swap terminations | swap     3    
Number of matured swap agreement | swap     2    
Two interest rate swaps | Cash Flow Hedging | Derivatives designated as hedging instruments:          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount $ 160,000   $ 160,000    
Interest rate swaps          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of new interest rate swaps | swap   11   27  
Interest rate swaps | Interest rate swaps - commercial loans          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of new interest rate swaps | swap 1   21    
Swap fee income $ 340 $ 816 $ 2,400 $ 1,900  
Interest rate swaps | Derivatives not designated as hedging instruments: | Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesAndOtherLiabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liabilities 630,814   630,814   539,225
Interest rate swaps | Derivatives not designated as hedging instruments: | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset $ 630,814   $ 630,814   539,225
Interest rate swaps | Cash Flow Hedging | Derivatives designated as hedging instruments:          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of swap terminations | swap 0   2    
Derivative, notional amount $ 250,000   $ 250,000    
Number of new interest rate swaps | swap 0 0 1 0  
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net $ 1,600   $ 1,600    
Interest rate swap-fixed pay          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative instrument, number of derivatives terminated | swap       3  
Interest rate swap-fixed pay | Cash Flow Hedging          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount   $ 100,000   $ 100,000  
Number of new interest rate swaps | swap 0   0    
Derivative instrument, number of derivatives terminated | swap   0   3  
Interest rate products | Derivatives not designated as hedging instruments:          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount $ 1,300,000   $ 1,300,000   $ 1,100,000
Number of customers | customer 112   112   96
Third-party broker 112   112   96
Risk participations - sold credit protection | Derivatives not designated as hedging instruments:          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Risk participation agreements with sold protection | risk_participation_Agreement 6   6   6
New risk participation agreements | risk_participation_Agreement 1   1    
Other income $ (67)   $ (67)    
Number of risk participation agreements terminated | risk_participation_Agreement 0   0 1  
Number of risk participation agreements, matured | risk_participation_Agreement     1    
Risk participations - sold credit protection | Derivatives not designated as hedging instruments: | Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesAndOtherLiabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liabilities $ 30,900   $ 30,900   $ 44,600
Risk participations - purchased credit protection | Derivatives not designated as hedging instruments:          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
New risk participation agreements | risk_participation_Agreement 1   1    
Other income $ (40)   $ (40)    
Risk participation agreements with purchase protection | risk_participation_Agreement 7   7   6
Risk participations - purchased credit protection | Derivatives not designated as hedging instruments: | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset $ 34,700   $ 34,700   $ 31,700