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Borrowings - Schedule of Amount Outstanding (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Debt Disclosure [Abstract]    
Federal funds purchased $ 0 $ 240,000
FHLB advances 850,000 1,100,000
Other borrowings:    
Short-term promissory notes issued to customers and customer repurchase agreements 563,831 611,304
Other Borrowings, Other, Activity for Year, Maximum Outstanding at any Month End 1,155 1,151
Other borrowings 901 838
Total other borrowings 564,732 612,142
Borrowings, maximum amounts outstanding    
Federal funds purchased, maximum outstanding 125,000 862,000
Federal Home Loan Bank advances, maximum outstanding 1,706,621 1,720,000
Customer funding, maximum outstanding $ 625,829 $ 646,439