Investment Securities - Contractual Maturities of Investments Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in one year	$ 59,345
Due after one year through five years	65,022
Due after five years through ten years	173,753
Due after ten years	523,458
Residential mortgage-backed securities	2,710,642
Amortized Cost	3,532,220	$ 3,740,413
Fair Value
Due in one year	59,271
Due after one year through five years	63,861
Due after five years through ten years	163,055
Due after ten years	449,949
Residential mortgage-backed securities	2,292,148
Total	$ 3,028,284	$ 3,302,312

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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