Balance Sheet Components (Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Prepaid Expense and Other Assets, Current [Abstract]
Intra-period income tax asset	$ 52,787	$ 0
Prepaid service contracts	8,883	12,539
Other prepaid expenses and current assets	28,377	19,289
Total prepaid expenses and other current assets	$ 90,047	$ 31,828