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Income Taxes
3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Income Taxes

11. Income Taxes

The (provision) benefit for income taxes for the three-months ended March 31, 2016 and 2015 reflects current taxes, deferred taxes, and withholding taxes in certain foreign jurisdictions. The effective tax rate for the three-months ended March 31, 2016 and 2015 was 0% and 0%, respectively. The valuation allowance against net deferred tax assets as of March 31, 2016 was $17,682, an increase of $2,262 from $15,420 as of December 31, 2015.