Debt Securities Held to Maturity - Expected Maturities of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized Cost
More than one year to five years	$ 19,875
More than five years to ten years	19,996
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	365,462
Amortized Cost	415,333	$ 421,523
Fair Value
More than one year to five years	18,385
More than five years to ten years	16,827
More than ten years	7,623
Held-to-maturity debt securities, allocated and single maturity date, total	42,835
Mortgage-backed securities and collateralized mortgage obligations	321,276
Debt securities held to maturity	$ 364,111	$ 370,391