Supplemental Information - Schedule of Revenues by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 50,109	$ 21,674	$ 123,365	$ 52,646	$ 82,888
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	35,300	18,131	95,826	46,264	72,771
EMEA
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	14,757	3,519	27,316	6,296	10,028
Japan
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 52	$ 24	$ 223	$ 86	$ 89