Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets, Other than Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Acquired Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 9,098
Core deposit intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,668	$ 12,668
Accumulated Amortization	6,569	6,178
Net Carrying Amount	$ 6,099	$ 6,490