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Investment Securities (Investment Securities Pledged To Secure Borrowings And Public Deposits) (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Investments, Debt and Equity Securities [Abstract]  
To state and local government to secure public deposits, amortized cost $ 1,983,773
To secure repurchased agreements, amortized cost 269,985
Other securities pledged, amortized cost 3,482,213
Total pledged securities, amortized cost 5,735,971
To state and local governments to secure public deposits, fair value 1,790,034
To secure repurchase agreements, fair value 251,540
Other securities pledged, fair value 3,204,788
Total pledged securities, fair value $ 5,246,362