Income Taxes - Schedule of Effective Tax Rate on Loss (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective tax rate on loss differs form U.S. statutory rates
Income tax expense (benefit) at the federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit	0.10%	0.10%	0.20%
Foreign income tax	41.50%	13.50%	21.80%
Other	(4.00%)	(0.50%)	(1.80%)
Valuation allowance	(72.60%)	(48.10%)	(55.20%)