7. Common Stock (Details Narrative) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Stock options exercisable	3,488,834
Stock options granted	529,500	415,000	410,500
Stock options forfeited	195,000	105,500	34,000
Weighted average grant date fair value of non-vested options	$ .576
Weighted average grant date fair value of vested options	.683
Weighted average grant date fair value of employee stock options granted	$ 66	$ 0.623	$ 0.51
Share based compensation	$ 18,829	$ 16,597	$ 14,704
Tax benefit	4,995	$ 3,983	$ 5,808
Unamortized compensation cost related to options	$ 48,477
Unamortized compensation cost related to options recognition period	36 months

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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-Topic 718
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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

Amount of noncash expense for share-based payment arrangement.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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
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- Definition

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.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Weighted average grant-date fair value of non-vested options outstanding.

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Weighted average grant-date fair value of options vested.

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