Segment Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | segment									1
Revenue	$ 595,726	$ 563,309	$ 519,845	$ 472,489	$ 467,867	$ 437,633	$ 405,211	$ 335,475	$ 2,151,369	$ 1,646,186	$ 1,129,167
Long lived assets	75,355				74,279				75,355	74,279
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,550,453	1,192,289	874,740
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									414,069	299,547	168,789
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									186,847	154,350	$ 85,638
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	69,238				69,128				69,238	69,128
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	$ 6,117				$ 5,151				$ 6,117	$ 5,151