Fair Value of Financial Instruments - Schedule of the Carrying Values and Estimated Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financial assets:
Loans and leases, net	$ 17,584,029	$ 17,776,713
Financial liabilities:
Borrowed funds	53,022	34,000
Level 1
Financial assets:
Loans and leases, net	0	0
Financial liabilities:
Certificates of deposits and brokered deposits	0	0
Borrowed funds	0	0
Level 2
Financial assets:
Loans and leases, net	0	0
Financial liabilities:
Certificates of deposits and brokered deposits	4,279,447	4,566,386
Borrowed funds	888,256	796,543
Level 3
Financial assets:
Loans and leases, net	17,381,219	17,672,269
Financial liabilities:
Certificates of deposits and brokered deposits	0	0
Borrowed funds	0	0
Carrying Value
Financial assets:
Loans and leases, net	17,584,029	17,776,713
Financial liabilities:
Certificates of deposits and brokered deposits	4,295,875	4,566,899
Borrowed funds	888,592	788,360
Estimated Fair Value
Financial assets:
Loans and leases, net	17,381,219	17,672,269
Financial liabilities:
Certificates of deposits and brokered deposits	4,279,447	4,566,386
Borrowed funds	$ 888,256	$ 796,543