v3.26.1
DEPOSITS - Narrative (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Deposit Liability [Line Items]    
Time deposits greater than $250,000 $ 1,100.0 $ 1,200.0
Demand deposit overdrafts reclassified as loans 1.0 1.2
State and municipal deposits 1,600.0 1,800.0
Asset Pledged as Collateral    
Deposit Liability [Line Items]    
Available borrowing capacity through FHLB $ 1,800.0 $ 1,800.0