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Derivatives (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]          
Counterparty default losses on forward contracts $ 0 $ 0 $ 0 $ 0  
Credit Derivatives [Line Items]          
Commitments    
Collateral required to be posted under agreements 87,900   87,900   87,200
Variation Margin Adjustment 114,200   114,200   173,900
Interest rate futures          
Credit Derivatives [Line Items]          
Derivative, notional amount 188,000   188,000   187,000
Mortgage-Backed Security          
Credit Derivatives [Line Items]          
Derivative, notional amount 17,000   17,000   12,000
Interest rate swaps          
Credit Derivatives [Line Items]          
Derivative Asset, Notional Amount 4,400,000   4,400,000   4,300,000
Derivative Liability, Notional Amount 4,400,000   4,400,000   4,400,000
Commitments To Originate Loans Held For Sale          
Credit Derivatives [Line Items]          
Commitments 58,919   58,919   46,208
Interest rate forward sales commitments          
Credit Derivatives [Line Items]          
Commitments $ 71,500   $ 71,500   $ 76,535