Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Capitalized research and development costs	$ 183,000	$ 183,000
Research and development credits	3,017,000	3,017,000
Stock-based compensation	3,787,000	3,628,000
Stock options issued in connection with the payment of debt	202,000	199,000
Net operating loss carryforwards	20,424,000	25,569,000
Accrued compensation	367,000	135,000
Accrued interest due to related party	103,000	83,000
Other, net	8,000	10,000
Total deferred tax assets	28,091,000	32,824,000
Valuation allowance	(28,091,000)	(32,824,000)
Net deferred tax assets