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Securities Sold Under Agreements to Repurchase - Schedule of Remaining Contractual Maturity of Secured Borrowings and Class of Collateral Pledged Under Repurchase Agreements (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements $ 279,061 $ 432,804 $ 438,053
U.S. Treasury and agency securities      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 279,061    
Overnight and Continuous      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 279,061    
Overnight and Continuous | U.S. Treasury and agency securities      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 279,061    
Up to 30 Days      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 0    
Up to 30 Days | U.S. Treasury and agency securities      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 0    
 30-90 Days      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 0    
 30-90 Days | U.S. Treasury and agency securities      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 0    
Greater Than 90 days      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements 0    
Greater Than 90 days | U.S. Treasury and agency securities      
Assets Sold under Agreements to Repurchase [Line Items]      
Secured borrowings and class of collateral pledged under repurchase agreements $ 0