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Refers to the amount of monthly meeting fees that a director could receive if restricted stock vested.

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Refers to the amount of monthly meeting fees that a director could receive in cash.

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Refers to the amount of regular quarterly retainer if restricted stock vested.

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Stock Options Acquired from Acquisition

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Amount of increase to additional paid-in capital (APIC) resulting from recognition of equity-based compensation for restricted stock units.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Number of share instruments newly issued under a share-based compensation plan.

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Percentage of vesting of share-based compensation awards.

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Stock Based Compensation - Additional Information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	May 15, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorizes for issuance (in shares)				675,000
Business combinations options acquired (in shares)	40,753
Unrecognized compensation expense	$ 0
Regular quarterly board retainer if restricted stock vested	7,500
Monthly meeting fees a director could receive in cash	725
Monthly meeting fees a director could receive if restricted stock vested	$ 900
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum vesting period of granted restricted stock	36 months
Unrecognized compensation expense	$ 1,033,000		$ 647,000
Weighted average period for recognition of unrecognized compensation cost	1 year 8 months 9 days
Share based compensation expense	$ 585,000	$ 292,000
Number of shares issued (in shares)	8,793	7,861
Recognized share based compensation expense	$ 318,000	$ 300,000
Restricted Stock \| Vesting 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%
Restricted Stock \| Vesting 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%
Restricted Stock \| Vesting 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%
HomeTown Bankshares Corporation Merger \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 257,000
HomeTown Bankshares Corporation Merger \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Business combinations options acquired (in shares)	40,753