v3.26.1
Derivatives and Hedging Activities (Schedule of Offset Fair Value and Notional Amount) (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Offsetting Derivative Assets [Abstract]    
Total gross derivative amounts recognized on the balance sheet $ 105,257,000 $ 105,260,000
Netting Adjustments 1,262,000 0
Gross amounts offset on the balance sheet 0 0
Net derivative amounts presented on the balance sheet 103,995,000 105,260,000
Financial instruments - institutional counterparties 4,798,000 7,814,000
Cash collateral - institutional counterparties 95,081,000 89,000,000
Net derivatives not offset 4,116,000 8,446,000
Liability Derivatives    
Notional Amount 675,000,000 575,000,000
Total gross derivative amounts recognized on the balance sheet 104,998,000 108,123,000
Netting Adjustments 0 1,678,000
Gross amounts offset on the balance sheet 0 0
Net derivative amounts presented on the balance sheet 104,998,000 106,445,000
Financial instruments - institutional counterparties 4,798,000 7,814,000
Cash collateral - institutional counterparties 0 0
Net derivatives not offset 100,200,000 98,631,000
Derivatives not designated as a hedging instrument:    
Offsetting Derivative Assets [Abstract]    
Total gross derivative amounts recognized on the balance sheet 103,995,000 105,260,000
Liability Derivatives    
Notional Amount   105,453,000
Total gross derivative amounts recognized on the balance sheet 104,217,000  
Derivatives not designated as a hedging instrument: | Interest rate products    
Offsetting Derivative Assets [Abstract]    
Notional Amount 1,944,208,000 2,000,609,000
Liability Derivatives    
Notional Amount 1,944,208,000 2,000,609,000
Derivatives not designated as a hedging instrument: | Credit contracts    
Offsetting Derivative Assets [Abstract]    
Notional Amount 33,314,000 33,385,000
Net derivative amounts presented on the balance sheet   0
Liability Derivatives    
Notional Amount 55,003,000 65,167,000
Net derivative amounts presented on the balance sheet   0
Cash collateral - institutional counterparties 0  
Derivatives designated as a hedging instrument: | Interest rate products    
Offsetting Derivative Assets [Abstract]    
Notional Amount 450,000,000 0
Liability Derivatives    
Notional Amount 225,000,000 575,000
Other assets | Derivatives not designated as a hedging instrument: | Interest rate products    
Offsetting Derivative Assets [Abstract]    
Total gross derivative amounts recognized on the balance sheet 103,989,000 105,251,000
Other assets | Derivatives not designated as a hedging instrument: | Credit contracts    
Offsetting Derivative Assets [Abstract]    
Total gross derivative amounts recognized on the balance sheet 6,000 9,000
Other assets | Derivatives designated as a hedging instrument: | Interest rate products    
Offsetting Derivative Assets [Abstract]    
Total gross derivative amounts recognized on the balance sheet 1,262,000 0
Other liabilities | Derivatives not designated as a hedging instrument: | Interest rate products    
Liability Derivatives    
Notional Amount   105,453,000
Total gross derivative amounts recognized on the balance sheet 104,217,000  
Other liabilities | Derivatives not designated as a hedging instrument: | Credit contracts    
Liability Derivatives    
Notional Amount   0
Total gross derivative amounts recognized on the balance sheet  
Other liabilities | Derivatives designated as a hedging instrument: | Interest rate products    
Liability Derivatives    
Notional Amount   $ 2,670,000
Total gross derivative amounts recognized on the balance sheet $ 781,000