Stock Option Plans - Virginia Partners Stock Option Activity (Details) - Virginia Partners Stock Option Plan - Stock options - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Outstanding shares
Outstanding at the beginning of year	247,705
Exercised	(16,147)
Forfeited	(8,589)
Outstanding at the end of year	222,969	247,705
Options exercisable at end of year	222,969
Weighted Average Exercise Price
Balance at the beginning of year	$ 6.14
Exercised in 2020 (Per share)	5.83
Forfeited	5.83
Balance at the end of year	6.17	$ 6.14
Options exercisable at end of year	$ 6.17
Weighted-Average Remaining Contractual Life
Outstanding at end of year	3 years 4 months 2 days	3 years 9 months 22 days
Intrinsic value, Balance at the end of year	$ 121,207

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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