Goodwill and Core Deposit Intangible - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill	$ 8,853	$ 8,853
Core deposit intangible assets	$ 1,301	$ 1,422
Percentage of fair value of reporting unit including goodwill	50.00%
Percentage of probability of fair value of reporting unit including goodwill	50.00%
Core Deposits [Member]
Goodwill And Intangible Assets Disclosure [Line Items]
Core deposit intangible assets	$ 4,200
Intangible assets amortized year	10 years
Core Deposits [Member] | Noah Bank Acquisition [Member]
Goodwill And Intangible Assets Disclosure [Line Items]
Core deposit intangible assets	$ 98