Commitments and Contingencies - Narrative (Details) - Settled Litigation $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 31, 2016 USD ($) installment	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Patent Infringement Case Against Limelight
Gain and Loss Contingencies [Line Items]
Settlement amount	$ 54.0
Number of installments in settlement | installment	12
Settlement payment term	3 years
Proceeds from settlements			$ 18.0	$ 18.0	$ 9.0
Multiple Existing Lawsuits Between Limelight Networks, Inc. and the Company
Gain and Loss Contingencies [Line Items]
Settlement amount		$ 14.9