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Borrowed Funds - Schedule of Pledged Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Loans $ 16,086,532 $ 10,970,666
Debt securities 2,067,668 1,231,827
Total assets 23,270,010 14,564,317
FHLB and FRB    
Debt Instrument [Line Items]    
Loans 11,843,177 7,923,979
Debt securities 1,800,384 1,367,469
Total assets 13,643,561 9,291,448
Repurchase agreements    
Debt Instrument [Line Items]    
Loans 0 0
Debt securities 67,647 78,422
Total assets 67,647 78,422
Total pledged assets    
Debt Instrument [Line Items]    
Loans 11,843,177 7,923,979
Debt securities 1,868,031 1,445,891
Total assets $ 13,711,208 $ 9,369,870