Debt Securities Held to Maturity - Expected Maturities of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
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	375,206
Amortized Cost	425,077	$ 429,734
Fair Value
More than one year to five years	18,282
More than five years to ten years	16,479
More than ten years	7,523
Held-to-maturity debt securities, allocated and single maturity date, total	42,284
Mortgage-backed securities and collateralized mortgage obligations	331,210
Debt securities held to maturity	$ 373,494	$ 434,789

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