Loans - Internal Risk Rating Of Loans By Portfolio Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Total loans	$ 400,056	$ 374,991
Pass [Member]
Total loans	397,281	371,321
Special Mention [Member]
Total loans	2,686	2,701
Substandard [Member]
Total loans	89	969
CRE [Member]
Total loans	80,506	72,057
CRE [Member] | Pass [Member]
Total loans	77,820	69,252
CRE [Member] | Special Mention [Member]
Total loans	2,686	2,701
CRE [Member] | Substandard [Member]
Total loans		104
MF [Member]
Total loans	8,185	8,998
MF [Member] | Pass [Member]
Total loans	8,185	8,998
C+I [Member]
Total loans	24,059	26,851
C+I [Member] | Pass [Member]
Total loans	24,059	26,823
C+I [Member] | Substandard [Member]
Total loans		28
ADL [Member]
Total loans	18,490	21,365
ADL [Member] | Pass [Member]
Total loans	18,490	21,365
RES [Member]
Total loans	251,466	234,199
RES [Member] | Pass [Member]
Total loans	251,382	233,477
RES [Member] | Substandard [Member]
Total loans	84	722
HELOC [Member]
Total loans	10,161	6,947
HELOC [Member] | Pass [Member]
Total loans	10,161	6,832
HELOC [Member] | Substandard [Member]
Total loans		115
CON [Member]
Total loans	7,189	4,574
CON [Member] | Pass [Member]
Total loans	7,184	$ 4,574
CON [Member] | Substandard [Member]
Total loans	$ 5