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Allowance for Loan Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	$ 4,386	$ 4,790
Financing Receivable, Allowance for Credit Losses, Charge-offs	(5)	(15)
Financing Receivable, Allowance for Credit Losses, Recoveries	86	33
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	81	18
Provision for loan losses	400	0
Financing Receivable, Allowance for Credit Losses	4,867	4,808
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	577	778
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	53	18
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	53	18
Provision for loan losses	45	(110)
Financing Receivable, Allowance for Credit Losses	675	686
Construction And Land Development Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	569	700
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	0	0
Provision for loan losses	13	73
Financing Receivable, Allowance for Credit Losses	582	773
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	2,289	2,218
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	0	0
Provision for loan losses	307	33
Financing Receivable, Allowance for Credit Losses	2,596	2,251
Residential Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	813	946
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	31	14
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	31	14
Provision for loan losses	33	(30)
Financing Receivable, Allowance for Credit Losses	877	930
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	138	148
Financing Receivable, Allowance for Credit Losses, Charge-offs	(5)	(15)
Financing Receivable, Allowance for Credit Losses, Recoveries	2	1
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(3)	(14)
Provision for loan losses	2	34
Financing Receivable, Allowance for Credit Losses	$ 137	$ 168

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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 recovery of financing receivables doubtful of collection that were previously charged off.

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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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