10. Share-Based Employee Compensation (Details 2) - $ / shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Number of options outstanding	489,000	569,500
Weighted average exercise price, outstanding	$ 3.96
Weighted average remaining contractual life (in years)	7 years 8 months 23 days
Stock options exercisable	185,800
Weighted average exercise price, exercisable	$ 4.15
Option 1
Exercise price, minimum	2.23
Exercise price, maximum	$ 3.83
Number of options outstanding	245,000
Weighted average exercise price, outstanding	$ 3.35
Weighted average remaining contractual life (in years)	7 years 9 months 25 days
Stock options exercisable	67,000
Weighted average exercise price, exercisable	$ 3.18
Option 2
Exercise price, minimum	4.07
Exercise price, maximum	$ 5.10
Number of options outstanding	244,000
Weighted average exercise price, outstanding	$ 4.56
Weighted average remaining contractual life (in years)	6 years 7 months 17 days
Stock options exercisable	118,800
Weighted average exercise price, exercisable	$ 4.70

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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

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