Accrued Expenses and Other Current Liabilities Schedule of Accrued Expenses and Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities, Current [Abstract]
Payroll and other related benefits	$ 52,293	$ 75,039
Bandwidth and co-location	20,838	27,260
Income, property and other taxes	61,458	22,093
Professional service fees	4,309	3,643
Other	4,754	5,052
Total	$ 143,652	$ 133,087