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Derivative Instruments - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative [Line Items]      
Net unrealized gains (losses) arising during the period $ 43,600,000 $ (70,101,000) $ (40,606,000)
Pre-tax income (loss) (16,900,000) (20,600,000) (23,700,000)
Cash flow hedge loss to be reclassified 1,000,000    
Cash flow hedge termination loss 4,000,000    
Reclaim cash collateral 21,200,000 34,600,000  
Obligation to return cash collateral $ 4,600,000 4,600,000  
Mortgage Derivatives      
Derivative [Line Items]      
Derivative, term of contract 90 days    
Cash Flow Hedging      
Derivative [Line Items]      
Net unrealized gains (losses) arising during the period $ 0 0 $ 0
Fair Value Hedges | Interest Rate Contracts | Long-term debt      
Derivative [Line Items]      
Hedged liability, discontinued fair value hedge   $ 198,400,000