10. Stockholder's Equity (Details 1) - $ / shares	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares	2,471,089	6,194,899	702,041
Exercise price
Warrant 1
Shares	185,374
Expiration date	Dec. 31, 2022
Warrant 2
Shares	2,285,715
Expiration date	Dec. 31, 2025

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

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 equity instruments other than options outstanding, including both vested and non-vested instruments.

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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)(ii)
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