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
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	129,343
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	231,785
Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	55,318
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	380,407
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	119,353
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	220,414
Pass [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	40,640
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,422
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	282
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	485
Special Mention [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,655
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	16,279
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,927
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,352
Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	12,338
Not Rated [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,781
Not Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,534
Not Rated [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 8,023