Deposits - Summary of Scheduled Maturities of Time Deposits (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Maturities of Time Deposits [Abstract]
One year or less	$ 109,784	$ 122,859
More than one year to two years	12,432	13,441
More than two years to three years	9,376	5,921
More than three years to four years	1,739	288
More than four years to five years	341	532
More than five years	0	0
Total	$ 133,672	$ 143,041