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Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 4,867		$ 4,808
Financing Receivable, Collectively Evaluated for Impairment	444,282		473,173
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	4,867	$ 4,386	4,808
Loans and Leases Receivable, Gross, Carrying Amount	444,282	461,382	473,173
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	675		686
Financing Receivable, Collectively Evaluated for Impairment	56,447		50,898
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	675		686
Loans and Leases Receivable, Gross, Carrying Amount	56,447	56,782	50,898
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	582		773
Financing Receivable, Collectively Evaluated for Impairment	32,302		44,931
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	582		773
Loans and Leases Receivable, Gross, Carrying Amount	32,302	32,841	44,931
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	2,596		2,251
Financing Receivable, Collectively Evaluated for Impairment	256,099		265,149
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	2,596		2,251
Loans and Leases Receivable, Gross, Carrying Amount	256,099	270,318	265,149
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	877		930
Financing Receivable, Collectively Evaluated for Impairment	91,010		103,631
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	877		930
Loans and Leases Receivable, Gross, Carrying Amount	91,010	92,575	103,631
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	137		168
Financing Receivable, Collectively Evaluated for Impairment	8,424		8,564
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	137		168
Loans and Leases Receivable, Gross, Carrying Amount	$ 8,424	$ 8,866	$ 8,564

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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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