16. STOCK OPTIONS AND WARRANTS (Details-Warrant Activity) - Warrants [Member] - $ / shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Number of Warrants
Number of Warrants Outstanding, Beginning	2,535,790	134,359
Number of Warrants Granted		2,410,001
Number of Warrants Exercised	(1,570,206)
Number of Warrants Expired		(8,570)
Number of Warrants Outstanding, Ending	965,584	2,535,790
Number of Warrants Exercisable, Ending	965,584
Weighted Average Exercise Price
Weighted Average Exercise Price Outstanding, Beginning	$ 6.41	$ 8.57
Weighted Average Exercise Price Granted		6.31
Weighted Average Exercise Price Exercised	6.47
Weighted Average Exercise Price Expired		12.5
Weighted Average Exercise Price Outstanding, Ending	6.33	$ 6.41
Weighted Average Exercise Price Exercisable	$ 6.33

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Number of Warrants Exercisable, Ending

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Warrants - Weighted Average Exercise Price Exercisable

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Warrants - Weighted Average Exercise Price Exercised

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Warrants - Weighted Average Exercise Price Expired

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- Definition

Weighted average exercise price of warrants [Abstract]

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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Number of warrants or rights outstanding.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Number of non-option equity instruments exercised by participants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Number of shares under non-option equity instrument agreements for which rights to exercise lapsed.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(4)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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