Segment Information and Geographic Data - Schedule of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	$ 25,890	$ 15,877	$ 49,189	$ 30,502
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	23,674	14,933	45,269	28,683
Foreign
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	$ 2,216	$ 944	$ 3,920	$ 1,819
Sales Revenue | Customer Concentration Risk | Non Us
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue generated outside of the United States	9.00%	6.00%	8.00%	6.00%