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Income Taxes - Schedule of Provision Computed by Applying Federal Statutory Rate (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	(21.00%)	(34.00%)
State and local taxes, net of federal benefit	(1.00%)	0.40%
Foreign rate differential	8.60%	34.40%
Permanent differences	(1.50%)	1.10%
Tax rate change and true-up	(13.90%)	0.30%
Other	0.10%	0.20%
Valuation allowance	23.50%	0.10%
Tax credits	0.50%	(1.40%)
Effective income tax rate	(4.70%)	1.10%

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