Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carry forwards	$ 8,506,035	$ 3,604,179
Capitalized research and development costs	17,477,585	14,381,936
Accrued liabilities	133,933	232,899
Tax credit carryforwards	7,174,516	6,311,164
Stock-based compensation	935,508	394,918
Operating lease	141,777
Total deferred tax assets	34,369,354	24,925,096
Valuation allowance	(34,221,451)	(24,922,829)
Net deferred tax assets	147,903	2,267
Deferred tax liabilities:
Operating lease right of use asset	(141,777)
Other	(6,126)	(2,267)
Total deferred tax liabilities	$ (147,903)	$ (2,267)