v3.26.1
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Cumulative Basis Adjustment for Fair Value Hedges (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Deposits    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Amortized Cost $ 1,586,085 $ 1,697,282
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items (2,876) 20,232
FHLB advances    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Amortized Cost 650,000 750,000
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items $ (837) $ 5,068