Allowance for Loan Losses - Schedule of Financing Receivable Credit Quality Indicators (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	$ 1,358,935	$ 1,249,435
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	1,266,138	1,174,167
Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	70,585	71,825
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	16,866	1,329
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	5,346	2,114
Single Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	161,362	139,338
Single Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	160,234	137,937
Single Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	734	738
Single Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	394	663
Residential Real Estate Multi Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	137,705	43,332
Residential Real Estate Multi Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	137,705	43,332
Residential Real Estate Farm Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	1,323	861
Residential Real Estate Farm Land [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	1,323	861
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	173,086	141,813
Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	168,352	136,257
Owner Occupied [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	4,734	5,556
Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	361,101	325,085
Non Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	297,873	264,546
Non Owner Occupied [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	46,379	59,453
Non Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	15,275
Non Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	1,574	1,086
Commercial Real Estate Construction Land Development Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	337,173	324,906
Commercial Real Estate Construction Land Development Loan [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	317,846	322,149
Commercial Real Estate Construction Land Development Loan [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	19,327	2,757
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	164,014	230,027
Commercial & Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	159,634	225,012
Commercial & Industrial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	145	4,059
Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	857	591
Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	3,378	365
Unsecured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	185	241
Unsecured [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	185	241
Secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	22,986	43,832
Secured [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Gross Loans	$ 22,986	$ 43,832