Loans - Schedule of Allowances for Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 7,618	$ 8,274
(Recovery) provision for loan losses	(895)	(655)
Charge-offs	(288)	(130)
Recoveries	403	129
Net (charge-offs) recoveries	115	(1)
Ending balance	6,838	7,618
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,240	1,739
(Recovery) provision for loan losses	47	(495)
Charge-offs	(227)	(35)
Recoveries	50	31
Net (charge-offs) recoveries	(177)	(4)
Ending balance	1,110	1,240
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,838	3,469
(Recovery) provision for loan losses	(68)	(639)
Charge-offs	(13)
Recoveries	3	8
Net (charge-offs) recoveries	(10)	8
Ending balance	2,760	2,838
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	992	1,156
(Recovery) provision for loan losses	273	(189)
Recoveries	3	25
Net (charge-offs) recoveries	3	25
Ending balance	1,268	992
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,380	756
(Recovery) provision for loan losses	(889)	624
Recoveries	312
Net (charge-offs) recoveries	312
Ending balance	803	1,380
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	421	352
(Recovery) provision for loan losses	(175)	99
Charge-offs	(48)	(95)
Recoveries	35	65
Net (charge-offs) recoveries	(13)	(30)
Ending balance	233	421
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	747	802
(Recovery) provision for loan losses	(83)	(55)
Ending balance	$ 664	$ 747

(Recovery) of provision for loan losses.

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of other addition (reduction) in allowance reserve for credit loss.

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-Publisher FASB
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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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-Publisher FASB
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+ References

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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.

+ References

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