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Loans and Allowance for Credit Losses on Loans - Information About Loans And The ALL By Portfolio Segment Are Summarized (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Individually evaluated for impairment | $ 188 |  | $ 278 |  |  |
Collectively evaluated for impairment | 414,324 |  | 399,778 |  |  |
Total | 414,512 |  | 400,056 |  |  |
Collectively evaluated for impairment | 3,319 |  | 3,581 |  |  |
Total | 3,319 | $ 3,287 | 3,581 | $ 3,644 | $ 3,642 | $ 3,590
CRE [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 88,051 |  | 80,506 |  |  |
Total | 88,051 |  | 80,506 |  |  |
Collectively evaluated for impairment | 806 |  | 942 |  |  |
Total | 806 | 725 | 942 | 1,019 | 894 | 833
MF [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 7,787 |  | 8,185 |  |  |
Total | 7,787 |  | 8,185 |  |  |
Collectively evaluated for impairment | 49 |  | 54 |  |  |
Total | 49 | 49 | 54 | 57 | 78 | 80
C+I [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 24,168 |  | 24,059 |  |  |
Total | 24,168 |  | 24,059 |  |  |
Collectively evaluated for impairment | 277 |  | 184 |  |  |
Total | 277 | 281 | 184 | 208 | 218 | 194
ADL [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 14,999 |  | 18,490 |  |  |
Total | 14,999 |  | 18,490 |  |  |
Collectively evaluated for impairment | 70 |  | 138 |  |  |
Total | 70 | 96 | 138 | 110 | 116 | 178
RES [Member] |  |  |  |  |  |
Individually evaluated for impairment | 185 |  | 273 |  |  |
Collectively evaluated for impairment | 259,377 |  | 251,193 |  |  |
Total | 259,562 |  | 251,466 |  |  |
Collectively evaluated for impairment | 1,910 |  | 2,048 |  |  |
Total | 1,910 | 1,904 | 2,048 | 2,025 | 2,188 | 2,139
HELOC [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 12,121 |  | 10,161 |  |  |
Total | 12,121 |  | 10,161 |  |  |
Collectively evaluated for impairment | 85 |  | 81 |  |  |
Total | 85 | 88 | 81 | 87 | 62 | 63
CON [Member] |  |  |  |  |  |
Individually evaluated for impairment | 3 |  | 5 |  |  |
Collectively evaluated for impairment | 7,821 |  | 7,184 |  |  |
Total | 7,824 |  | 7,189 |  |  |
Collectively evaluated for impairment | 109 |  | 100 |  |  |
Total | 109 | 119 | 100 | 111 | $ 86 | 75
Unallocated [Member] |  |  |  |  |  |
Collectively evaluated for impairment | 13 |  | 34 |  |  |
Total | $ 13 | $ 25 | $ 34 | $ 27 |  | $ 28

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