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Commitments and Contingencies - Purchase Commitments (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Bandwidth and Co-location Commitments  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2016 $ 117,044
2017 29,914
2018 400
2019 74
2020 0
Thereafter 0
Total 147,432
Purchase Order Commitments  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2016 102,832
2017 11,363
2018 8,413
2019 591
2020 0
Thereafter 0
Total $ 123,199