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Shareholders' Equity (Deficit) (Details) - Schedule of equity-based awards recognized - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Shareholders' Equity (Deficit) (Details) - Schedule of equity-based awards recognized [Line Items]
Total share-based compensation expense	$ 4,577	$ 976	$ 995
Research and development expense [Member]
Shareholders' Equity (Deficit) (Details) - Schedule of equity-based awards recognized [Line Items]
Total share-based compensation expense	1,806	180	239
Marketing and business development [Member]
Shareholders' Equity (Deficit) (Details) - Schedule of equity-based awards recognized [Line Items]
Total share-based compensation expense	140	90	17
General and administrative expense [Member]
Shareholders' Equity (Deficit) (Details) - Schedule of equity-based awards recognized [Line Items]
Total share-based compensation expense	$ 2,631	$ 706	$ 739

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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