v3.25.2
Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Investment Securities HTM and AFS (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Investment securities HTM, Fair value    
Fair value $ 2,476,289 $ 2,524,525
Investment securities AFS, Amortized cost    
Amortized Cost 8,142,396 8,079,918
Investment securities AFS, Fair value    
Fair value 7,798,824 7,551,018
Mortgage-backed securities issued by U.S. Government sponsored enterprises    
Investment securities HTM, Amortized cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,502,639  
Amortized cost 2,502,639  
Investment securities HTM, Fair value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,476,289  
Fair value 2,476,289 2,524,525
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,239,222  
Amortized Cost 2,239,222 2,294,700
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,041,389  
Fair value 2,041,389 2,034,035
U.S. Treasury securities    
Investment securities AFS, Amortized cost    
Within One Year 131,387  
1 to 5 Years 887,761  
5 to 10 Years 201,661  
More Than 10 Years 0  
Amortized Cost 1,220,809 1,214,363
Investment securities AFS, Fair value    
Within One Year 131,900  
1 to 5 Years 902,835  
5 to 10 Years 206,191  
More Than 10 Years 0  
Fair value 1,240,926 1,212,742
U.S. Government agency securities    
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 29,995  
5 to 10 Years 0  
More Than 10 Years 0  
Amortized Cost 29,995 29,993
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 29,711  
5 to 10 Years 0  
More Than 10 Years 0  
Fair value 29,711 29,163
Mortgage-backed securities issued by U.S. Government agencies    
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 34  
5 to 10 Years 2  
More Than 10 Years 1,551,520  
Amortized Cost 1,551,556 1,583,331
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 34  
5 to 10 Years 2  
More Than 10 Years 1,456,852  
Fair value 1,456,888 1,462,790
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises    
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 11  
5 to 10 Years 7,867  
More Than 10 Years 616,085  
Amortized Cost 623,963 657,453
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 11  
5 to 10 Years 7,718  
More Than 10 Years 527,940  
Fair value 535,669 550,201
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises    
Investment securities AFS, Amortized cost    
Within One Year 9,549  
1 to 5 Years 1,541,359  
5 to 10 Years 899,958  
More Than 10 Years 16,825  
Amortized Cost 2,467,691 2,290,968
Investment securities AFS, Fair value    
Within One Year 9,436  
1 to 5 Years 1,550,689  
5 to 10 Years 910,364  
More Than 10 Years 14,585  
Fair value 2,485,074 2,253,116
Corporate debt securities and other debt securities    
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 9,160  
5 to 10 Years 0  
More Than 10 Years 0  
Amortized Cost 9,160 9,110
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 9,167  
5 to 10 Years 0  
More Than 10 Years 0  
Fair value $ 9,167 $ 8,971