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Fair Value Measurement - Schedule of Fair Value Measurements Change in Level 3 Inputs (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Liabilities, fair value
Transition of derivative warrant liability to equity on pre-funded warrants
Change in fair value of warrant derivative liabilities	(24,552,257)
Liabilities, fair value	26,529,205
Warrant Derivative Liability [Member]
Liabilities, fair value
Liabilities, fair value	26,663,802
January 14, 2021 Offering [Member] | Warrant Derivative Liability [Member]
Issuance of detachable warrants	21,922,158
Issuance of detachable pre-funded warrants	378,615
February 1, 2021 Offering [Member] | Warrant Derivative Liability [Member]
Issuance of detachable warrants	27,476,352
Issuance of detachable pre-funded warrants	$ 1,438,934

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- Definition

Change in fair value of warrant derivative liabilities.

+ References

No definition available.

+ Details

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- Definition

Issuance of detachable pre-funded warrants.

+ References

No definition available.

+ Details

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- Definition

Issuance of detachable warrants.

+ References

No definition available.

+ Details

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- Definition

Transition of derivative warrant liability to equity on pre-funded warrants.

+ References

No definition available.

+ Details

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X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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