Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 39,927
Amortized Cost, Due from one to five years	84,249
Amortized Cost, Due from five to ten years	42,796
Amortized Cost, Due after ten years	285,041
Amortized Cost, Mortgage-backed securities in government sponsored entities	258,045
Amortized Cost, Total securities available for sale	710,058	$ 672,892
Fair Value, Due in one year or less	39,777
Fair Value, Due from one to five years	79,134
Fair Value, Due from five to ten years	42,100
Fair Value, Due after ten years	261,495
Fair Value, Mortgage-backed securities in government sponsored entities	225,561
Fair Value, Total securities available for sale	$ 648,067	$ 618,272

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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