Loans - Summary of Loans by Credit Quality Indicator (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 416,446
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	380,407
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,422
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	16,279
Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	12,338
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	129,343
Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	119,353
Commercial and Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	282
Commercial and Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,927
Commercial and Industrial [Member] | Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,781
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	231,785
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	220,414
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	485
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,352
Commercial Real Estate [Member] | Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,534
Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	55,318
Construction & Land Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	40,640
Construction & Land Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,655
Construction & Land Development [Member] | Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 8,023