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Repurchase Agreement Borrowings (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount $ 87,442 $ 108,182
Short-term borrowings 117,442 328,182
Available unpledged securities 550,400 847,500
Securities Sold under Agreements to Repurchase    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Short-term borrowings 144,100 180,800
Maturity Overnight [Member]    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount 87,442 108,182
Maturity up to 30 days [Member]    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount 0 0
Maturity 30 to 90 Days [Member]    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount 0 0
Maturity over 90 days [Member]    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount $ 0 $ 0