Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Balance Sheet Components [Abstract]
Inventory deposit	$ 60,315	$ 0
Prepaid income taxes	17,383	14,150
Other current assets	79,140	29,270
Other prepaid expenses and deposits	11,846	7,190
Total prepaid expenses and other current assets	$ 168,684	$ 50,610