Fair Value Presentation - Schedule of Financial Assets Measured at Fair Value on a Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Assets	$ 775	$ 1,180
Other Real Estate Owned [Member]
Assets:
Assets	775	1,180
Level 3 [Member]
Assets:
Assets	775	1,180
Level 3 [Member] | Other Real Estate Owned [Member]
Assets:
Assets	$ 775	$ 1,180