Supplemental Information - Schedule of Revenues by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 86,713	$ 61,514	$ 160,022	$ 113,639	$ 248,069
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	58,934	41,935	105,538	79,738	168,414
EMEA
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	22,505	18,522	45,025	32,396	72,485
Japan
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	4,185	$ 1,057	7,555	$ 1,505	6,351
Greater China
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 1,089		$ 1,904		$ 819