v3.26.1
Derivative and Hedging Activities - Offset Fair Value and Notional Amount (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Asset Derivatives    
Total gross derivative amounts recognized on the balance sheet $ 115,721,000 $ 105,260,000
Netting Adjustments 4,325,000 0
Gross amounts offset on the balance sheet 0 0
Net derivative amounts presented on the balance sheet 111,396,000 105,260,000
Financial instruments - institutional counterparties 1,812,000 7,814,000
Cash collateral - institutional counterparties 105,617,000 89,000,000
Net derivatives not offset 3,967,000 8,446,000
Liability Derivatives    
Notional amount 675,000,000 575,000,000
Total gross derivative amounts recognized on the balance sheet 111,809,000 108,123,000
Netting Adjustments 0 1,678,000
Gross amounts offset on the balance sheet 0 0
Net derivative amounts presented on the balance sheet 111,809,000 106,445,000
Financial instruments - institutional counterparties 1,812,000 7,814,000
Cash collateral - institutional counterparties 0 0
Net derivatives not offset 109,997,000 98,631,000
Derivatives not designated as a hedging instrument:    
Asset Derivatives    
Total gross derivative amounts recognized on the balance sheet 111,396,000 105,260,000
Liability Derivatives    
Notional amount   105,453,000
Total gross derivative amounts recognized on the balance sheet 111,549,000  
Derivatives not designated as a hedging instrument: | Interest rate products    
Asset Derivatives    
Notional amount 1,939,076,000 2,000,609,000
Liability Derivatives    
Notional amount 1,939,076,000 2,000,609,000
Derivatives not designated as a hedging instrument: | Credit contracts    
Asset Derivatives    
Notional amount 43,243,000 33,385,000
Net derivative amounts presented on the balance sheet 0 0
Liability Derivatives    
Notional amount 69,591,000 65,167,000
Net derivative amounts presented on the balance sheet 0 0
Cash collateral - institutional counterparties 0  
Derivatives designated as a hedging instrument: | Interest rate products    
Asset Derivatives    
Notional amount 550,000,000 0
Liability Derivatives    
Notional amount 125,000,000 575,000,000
Balance Sheet Location [Axis]: us-gaap:OtherAssets | Derivatives not designated as a hedging instrument: | Interest rate products    
Asset Derivatives    
Total gross derivative amounts recognized on the balance sheet 111,385,000 105,251,000
Balance Sheet Location [Axis]: us-gaap:OtherAssets | Derivatives not designated as a hedging instrument: | Credit contracts    
Asset Derivatives    
Total gross derivative amounts recognized on the balance sheet 11,000 9,000
Balance Sheet Location [Axis]: us-gaap:OtherAssets | Derivatives designated as a hedging instrument: | Interest rate products    
Asset Derivatives    
Total gross derivative amounts recognized on the balance sheet 4,325,000 0
Balance Sheet Location [Axis]: us-gaap:OtherLiabilities | 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 111,568,000  
Balance Sheet Location [Axis]: us-gaap:OtherLiabilities | Derivatives not designated as a hedging instrument: | Credit contracts    
Liability Derivatives    
Notional amount   0
Total gross derivative amounts recognized on the balance sheet (19,000)  
Balance Sheet Location [Axis]: us-gaap:OtherLiabilities | 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 $ 260,000