Supplemental Information - Schedule of Revenues by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 61,514	$ 38,376	$ 113,639	$ 73,256	$ 177,026
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	41,935	31,367	79,738	60,526	134,688
EMEA
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	18,522	6,891	32,396	12,559	42,035
Japan
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 1,057	$ 118	$ 1,505	$ 171	$ 303