Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | segment			1
Revenue	$ 563,309	$ 437,633	$ 1,555,643	$ 1,178,319
Long-lived assets	75,397		75,397		$ 74,279
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	406,666	309,318	1,099,624	878,201
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	92,911	79,143	316,608	199,244
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	63,732	$ 49,172	139,411	$ 100,874
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	69,093		69,093		69,128
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 6,304		$ 6,304		$ 5,151