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Loans and Allowance for Credit Losses on Loans - Analysis Of Past Due Loans By Portfolio Segment Including Non-Accrual Loans Without ACL (Detail) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Total Past Due | $ 414,512,000 |
Total | 414,512,000 | $ 400,056,000
Non-Accrual Loans | 3,000 | 89,000
30-59 Days Past Due [Member] |  |
Total Past Due |  | 12,000
60-89 Days Past Due [Member] |  |
Total Past Due |  | 84,000
Total Past Due |  |
Total Past Due |  | 96,000
Current |  |
Total Past Due | 414,512,000 | 399,960,000
CRE [Member] |  |
Total Past Due | 88,051,000 |
Total | 88,051,000 | 80,506,000
CRE [Member] | Current |  |
Total Past Due | 88,051,000 | 80,506,000
MF [Member] |  |
Total Past Due | 7,787,000 |
Total | 7,787,000 | 8,185,000
MF [Member] | Current |  |
Total Past Due | 7,787,000 | 8,185,000
C+I [Member] |  |
Total Past Due | 24,168,000 |
Total | 24,168,000 | 24,059,000
C+I [Member] | Current |  |
Total Past Due | 24,168,000 | 24,059,000
ADL [Member] |  |
Total Past Due | 14,999,000 |
Total | 14,999,000 | 18,490,000
ADL [Member] | Current |  |
Total Past Due | 14,999,000 | 18,490,000
RES [Member] |  |
Total Past Due | 259,562,000 |
Total | 259,562,000 | 251,466,000
Non-Accrual Loans | 84,000 | 84,000
RES [Member] | 60-89 Days Past Due [Member] |  |
Total Past Due |  | 84,000
RES [Member] | Total Past Due |  |
Total Past Due |  | 84,000
RES [Member] | Current |  |
Total Past Due | 259,562,000 | 251,382,000
HELOC [Member] |  |
Total Past Due | 12,121,000 |
Total | 12,121,000 | 10,161,000
HELOC [Member] | 30-59 Days Past Due [Member] |  |
Total Past Due |  | 5,000
HELOC [Member] | Total Past Due |  |
Total Past Due |  | 5,000
HELOC [Member] | Current |  |
Total Past Due | 12,121,000 | 10,156,000
CON [Member] |  |
Total Past Due | 7,824,000 |
Total | 7,824,000 | 7,189,000
Non-Accrual Loans | 3,000 | 5,000
CON [Member] | 30-59 Days Past Due [Member] |  |
Total Past Due |  | 7,000
CON [Member] | Total Past Due |  |
Total Past Due |  | 7,000
CON [Member] | Current |  |
Total Past Due | $ 7,824,000 | $ 7,181,000

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