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Allowance for Loan Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	$ 5,682	$ 4,867	$ 5,618	$ 4,386
Financing Receivable, Allowance for Credit Losses, Charge-offs	(1)	(31)	(6)	(36)
Financing Receivable, Allowance for Credit Losses, Recoveries	26	22	95	108
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	25	(9)	89	72
Provision for loan losses	(600)	450	(600)	850
Financing Receivable, Allowance for Credit Losses	5,107	5,308	5,107	5,308
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	828	675	807	577
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	(4)	0	(4)
Financing Receivable, Allowance for Credit Losses, Recoveries	2	2	54	55
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	2	(2)	54	51
Provision for loan losses	(1)	6	(32)	51
Financing Receivable, Allowance for Credit Losses	829	679	829	679
Construction And Land Development Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	551	582	594	569
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0	0	0
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	0	0	0	0
Provision for loan losses	88	31	45	44
Financing Receivable, Allowance for Credit Losses	639	613	639	613
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	3,302	2,596	3,169	2,289
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0	0	0
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	0	0	0	0
Provision for loan losses	(598)	319	(465)	626
Financing Receivable, Allowance for Credit Losses	2,704	2,915	2,704	2,915
Residential Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	908	877	944	813
Financing Receivable, Allowance for Credit Losses, Charge-offs	(1)	0	(1)	0
Financing Receivable, Allowance for Credit Losses, Recoveries	13	14	26	45
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	12	14	25	45
Provision for loan losses	(82)	63	(131)	96
Financing Receivable, Allowance for Credit Losses	838	954	838	954
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	93	137	104	138
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	(27)	(5)	(32)
Financing Receivable, Allowance for Credit Losses, Recoveries	11	6	15	8
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	11	(21)	10	(24)
Provision for loan losses	(7)	31	(17)	33
Financing Receivable, Allowance for Credit Losses	$ 97	$ 147	$ 97	$ 147

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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