v3.26.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Jul. 01, 2026
Aug. 06, 2026
Sep. 30, 2024
Interest Rate Swap | Designated as Hedging Instrument      
Subsequent Event [Line Items]      
Notional amount     $ 125.0
Subsequent Event      
Subsequent Event [Line Items]      
Sale of stock, consideration received   $ 74.0  
Repayments of borrowings   125.0  
Subsequent Event | Interest Rate Swap | Designated as Hedging Instrument      
Subsequent Event [Line Items]      
Notional amount   125.0  
Net settlement amount received   $ 1.2  
Adirondack Bancorp, Inc. | Subsequent Event      
Subsequent Event [Line Items]      
Voting interests acquired (in percent) 100.00%    
Consideration transferred $ 101.0    
Entity shares issued per acquiree share 1.8610    
Cash payment per acquiree share (n dollars per share) $ 18.72    
Common stock issued (in shares) 1,980,000    
Acquisition-date fair value of common stock $ 81.0    
Cash payments $ 19.9    
Common stock price (in dollars per share) $ 41.06