Borrowings and Subordinated Debentures - Borrowings and Subordinated Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Subordinated Debt	$ 40,354	$ 40,484
Short-term borrowings	15,000	20,938
Total Long-term borrowings	$ 55,354	$ 61,422