Fair Value Disclosures - Summary of Loans Held-for-Sale at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Fair Value Measurements Loans Held For Sale [Abstract]
Unpaid principal balance on loans held-for-sale	$ 14,701	$ 10,757	$ 11,416
Net unrealized gains on loans held-for-sale	379	320	350
Loans held-for-sale at fair value	$ 15,080	$ 11,077	$ 11,766