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Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 4,386	$ 4,790
Financing Receivable, Collectively Evaluated for Impairment	461,283	477,320
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	99	157
Allowance for loan losses	4,386	4,790
Loans and Leases Receivable, Gross, Carrying Amount	461,382	477,477
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	577	778
Financing Receivable, Collectively Evaluated for Impairment	56,683	63,467
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	99	0
Allowance for loan losses	577	778
Loans and Leases Receivable, Gross, Carrying Amount	56,782	63,467
Construction And Land Development Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	569	700
Financing Receivable, Collectively Evaluated for Impairment	32,841	40,222
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Allowance for loan losses	569	700
Loans and Leases Receivable, Gross, Carrying Amount	32,841	40,222
Commercial Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,289	2,218
Financing Receivable, Collectively Evaluated for Impairment	270,318	261,739
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	157
Allowance for loan losses	2,289	2,218
Loans and Leases Receivable, Gross, Carrying Amount	270,318	261,896
Residential Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	813	946
Financing Receivable, Collectively Evaluated for Impairment	92,575	102,597
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Allowance for loan losses	813	946
Loans and Leases Receivable, Gross, Carrying Amount	92,575	102,597
Consumer Installment and Revolving Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	138	148
Financing Receivable, Collectively Evaluated for Impairment	8,866	9,295
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Allowance for loan losses	138	148
Loans and Leases Receivable, Gross, Carrying Amount	$ 8,866	$ 9,295

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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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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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