v3.26.1
Derivatives and Hedging Activities (Narrative) (Details)
 3 Months Ended
Mar. 31, 2026
USD ($)
instrument
counterparty
Dec. 31, 2025
USD ($)
instrument
Derivative [Line Items]    
Amount of collateral $ 0 $ 0
Derivative assets 103,995,000 105,260,000
Derivative liabilities 104,998,000 106,445,000
Derivative instruments in accumulated other comprehensive income (loss) reclassified to interest expense (409,000)  
Notional amount $ 675,000,000 575,000,000
Number of counterparties | counterparty 6  
Derivatives not designated as a hedging instrument:    
Derivative [Line Items]    
Notional amount   $ 105,453,000
Derivatives not designated as a hedging instrument: | Interest rate products    
Derivative [Line Items]    
Number of derivative instruments held | instrument 428 438
Derivative notional amount $ 3,890,000,000 $ 4,000,000,000
Notional amount $ 1,944,208,000 $ 2,000,609,000
Derivatives not designated as a hedging instrument: | Credit contracts    
Derivative [Line Items]    
Number of derivative instruments held | instrument 6 10
Derivative notional amount $ 88,300,000 $ 98,600,000
Amount of collateral 0  
Derivative assets   0
Derivative liabilities   0
Notional amount $ 55,003,000 $ 65,167,000
Derivatives designated as a hedging instrument:    
Derivative [Line Items]    
Number of outstanding derivatives | instrument 8 7
Derivatives designated as a hedging instrument: | Interest rate products    
Derivative [Line Items]    
Notional amount $ 225,000,000 $ 575,000