Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax computed at federal statutory tax rate	21.00%	34.00%
Deferred tax effects from the Tax Act	0.00%	(57.20%)
State taxes, net of federal benefit	10.30%	4.70%
Tax credit carryforwards	12.20%	26.80%
Non-deductible income (expense)	0.00%	(4.90%)
Change in valuation allowance	(42.70%)	(1.80%)
Other	(1.00%)	(1.80%)
Effective tax rate	(0.20%)	(0.20%)