v3.26.1
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Detail)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
derivative
Jun. 30, 2026
USD ($)
derivative
Jun. 30, 2025
USD ($)
derivative
Dec. 31, 2025
USD ($)
derivative
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives $ 9,626 $ 9,626   $ 11,369
Derivative liabilities 14,443 14,443   15,799
Cash collateral received 5,900 5,900    
Collateral posted 2,100 2,100    
Offset of collateral, net 3,800 3,800    
Credit contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives 7,300 7,300    
Derivative liabilities 2,500 2,500    
Derivative, net liability position, aggregate fair value $ 4,800 $ 4,800    
Derivatives designated as fair value hedges: | Interest rate derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Aggregate notional amount       $ 800,000
Derivatives not designated as hedging instruments: | Interest rate swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
Number of derivative instruments held | derivative 108 108   118
Aggregate notional amount $ 1,200,000 $ 1,200,000   $ 1,100,000
Derivatives not designated as hedging instruments: | Interest rate caps        
Derivative Instruments, Gain (Loss) [Line Items]        
Number of derivative instruments held | derivative 12 12   10
Aggregate notional amount $ 484,600 $ 484,600   $ 432,200
Cash Flow Hedges | Derivatives designated as fair value hedges:        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain to be reclassified from AOCI during the next twelve months   $ 4,900    
Term of hedge   5 years    
Cash Flow Hedges | Derivatives designated as fair value hedges: | Other commercial and industrial        
Derivative Instruments, Gain (Loss) [Line Items]        
Number of instruments entered into | derivative   2    
Cash Flow Hedges | Derivatives designated as fair value hedges: | Interest rate derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Number of derivative instruments held | derivative 4 4   2
Aggregate notional amount $ 1,100,000 $ 1,100,000    
Cash Flow Hedges | Derivatives designated as fair value hedges: | Interest rate derivatives | Other commercial and industrial        
Derivative Instruments, Gain (Loss) [Line Items]        
Aggregate notional amount 300,000 300,000    
Fair Value Hedging | Derivatives designated as fair value hedges: | Interest rate derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Aggregate notional amount $ 2,200,000 $ 2,200,000   $ 2,400,000
Number of outstanding interest rate derivatives | derivative 46 46   44
Notional amount of derivatives entered into during the period $ 118,300      
Number of interest rate derivatives entered into during the period | derivative 3 7 3  
Notional amount of derivatives entered into during the period   $ 244,000 $ 320,200