Segment and Geographic Information - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	$ 20,680	$ 26,154	$ 52,184	$ 78,552
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	7,784	10,118	22,339	31,337
Foreign
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenue	$ 12,896	$ 16,036	$ 29,845	$ 47,215