The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Loans - Allowances for Loan Losses and Ending Balances by Portfolio Class and Based on Impairment Method (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	$ 201		$ 222
Allowance for loan losses collectively evaluated for impairment	6,807		7,396
Total ending allowance balance	7,008	$ 7,268	7,618	$ 7,645	$ 7,875	$ 8,274
Loans individually evaluated for impairment	1,293		1,955
Loans collectively evaluated for impairment	608,417		547,095
Total ending loans balance	609,710		549,050
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	196		208
Allowance for loan losses collectively evaluated for impairment	1,053		1,032
Total ending allowance balance	1,249	1,213	1,240	1,349	1,335	1,739
Loans individually evaluated for impairment	322		342
Loans collectively evaluated for impairment	135,653		123,591
Total ending loans balance	135,975		123,933
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment			9
Allowance for loan losses collectively evaluated for impairment	2,112		2,829
Total ending allowance balance	2,112	2,422	2,838	3,124	3,404	3,469
Loans individually evaluated for impairment	157		291
Loans collectively evaluated for impairment	208,822		194,463
Total ending loans balance	208,979		194,754
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	1		2
Allowance for loan losses collectively evaluated for impairment	1,288		990
Total ending allowance balance	1,289	1,177	992	1,030	1,060	1,156
Loans individually evaluated for impairment	688		856
Loans collectively evaluated for impairment	189,341		167,391
Total ending loans balance	190,029		168,247
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses collectively evaluated for impairment	1,276		1,380
Total ending allowance balance	1,276	1,607	1,380	1,275	767	756
Loans individually evaluated for impairment			329
Loans collectively evaluated for impairment	58,388		45,713
Total ending loans balance	58,388		46,042
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	4		3
Allowance for loan losses collectively evaluated for impairment	264		418
Total ending allowance balance	268	395	421	242	278	352
Loans individually evaluated for impairment	126		137
Loans collectively evaluated for impairment	16,213		15,937
Total ending loans balance	16,339		16,074
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses collectively evaluated for impairment	814		747
Total ending allowance balance	$ 814	$ 454	$ 747	$ 625	$ 1,031	$ 802