Stockholders' Equity - Summary of Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Stockholders Equity [Line Items]
Stock-based compensation	$ 559,436	$ 667,338
Research and Development
Stockholders Equity [Line Items]
Stock-based compensation	168,045	262,457
General and Administrative
Stockholders Equity [Line Items]
Stock-based compensation	$ 391,391	$ 404,881

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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