Revenues - Disaggregation of Revenues by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from External Customer [Line Items]
Revenues	$ 199,621	$ 217,413	$ 429,307	$ 419,930
United States
Revenue from External Customer [Line Items]
Revenues	178,052	195,811	385,786	375,831
Rest of world
Revenue from External Customer [Line Items]
Revenues	$ 21,569	$ 21,602	$ 43,521	$ 44,099