Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	$ 290	$ 386
Core deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	225	310
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	$ 65	$ 76