Deferred Policy Acquisition Costs - Schedule of Major Categories of the Deferred Policy Acquisition Costs (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Charges, Insurers [Abstract]
Agents’ commissions	$ 14,733	$ 13,466
Premium taxes	3,074	2,828
Deferred underwriting expenses	3,278	2,857
Total deferred policy acquisition costs	$ 21,085	$ 19,151	$ 17,975	$ 17,401