Debt Securities Held to Maturity - Expected Maturities of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
More than one year to five years	$ 29,875
More than five years to ten years	9,996
More than ten years	10,000
Held-to-maturity debt securities, allocated and single maturity date, total	49,871
Mortgage-backed securities and collateralized mortgage obligations	348,480
Amortized Cost	398,351	$ 401,154
Fair Value
More than one year to five years	27,610
More than five years to ten years	8,483
More than ten years	7,714
Held-to-maturity debt securities, allocated and single maturity date, total	43,807
Mortgage-backed securities and collateralized mortgage obligations	308,184
Debt securities held to maturity	$ 351,991	$ 357,177