Segments - Summary of Revenue by Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 46,996	$ 40,627	$ 136,152	$ 116,249
North America
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	33,541	29,941	98,080	87,341
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	10,928	9,066	31,470	24,259
APAC
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 2,527	$ 1,620	$ 6,602	$ 4,649