Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details) $ in Thousands	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments \| segment			1
Revenue	$ 608,321	$ 519,845	$ 1,203,745	$ 992,334
Long-lived assets	41,023		41,023		$ 42,549	$ 75,355
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	446,370	377,460	886,008	692,958
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	112,060	101,811	223,329	223,697
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	49,891	$ 40,574	94,408	$ 75,679
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	35,108		35,108			69,238
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 5,915		$ 5,915			$ 6,117