Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Liabilities, Current [Abstract]
Payroll and other related benefits	$ 180,301	$ 150,784
Bandwidth and co-location	76,184	72,782
Property, use and other taxes	59,578	47,584
Professional service fees	2,169	4,225
Other accrued expenses	10,072	8,368
Total	328,304	283,743
Deferred rent	42,566	31,510
Uncertain tax positions	63,976	86,814
Other long-term liabilities	54,398	24,631
Total	$ 160,940	$ 142,955