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Commitments and Contingencies - Purchase Commitments (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Bandwidth Commitments  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2019 $ 83,124
2020 21,191
2021 7,407
2022 1,382
2023 49
Thereafter 90
Total 113,243
Purchase Order Commitments  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2019 190,042
2020 19,540
2021 11,985
2022 2,276
2023 1,606
Thereafter 364
Total $ 225,813