15. STOCK OPTIONS AND WARRANTS (Details-Assumptions) - Employee Stock Option [Member] - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Expected volatility		82.40%
Expected remaining term	5-7 Years	5 Years
Risk-free interest rate		2.59%
Weighted average FV	$ 4.02	$ 6.66
Minimum [Member]
Expected volatility	78.47%
Risk-free interest rate	1.73%
Maximum [Member]
Expected volatility	82.26%
Risk-free interest rate	1.92%

Discloses use of the simplified method to calculate the expected term that stock option awards under the specified plan will exist before being exercised or terminated, the reason and justification for its use, and the periods for which the method was used if it was not used in all periods presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2.Q6)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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-Publisher FASB
-Name Accounting Standards Codification
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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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