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Derivative Financial Instruments and Hedging Activities - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2024
contracts
Jun. 30, 2023
contracts
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Derivative [Line Items]        
Cash collateral received from counterparties under master netting agreements     $ 8,116,000 $ 49,874,000
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost     244,300,000 265,800,000
Securities AFS        
Derivative [Line Items]        
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost     309,200,000 558,500,000
Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease)     610,000 $ 1,100,000
Derivatives designated as hedging instruments        
Derivative [Line Items]        
Interest Rate Swap Contacts Terminated, Number | contracts 3 1    
Interest Rate Swap | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount     860,000,000.0  
Cash Flow Hedging        
Derivative [Line Items]        
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months     $ 540,000