Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 190,995	$ 110,141
Cost of revenue	178,116	107,388
Gross profit	12,879	2,753
Operating expenses
Technology and development	20,274	15,556
Marketing	25,708	33,201
General and administrative	24,327	21,448
Total operating expenses	70,309	70,205
Loss from operations	(57,430)	(67,452)
Interest income	1,103	2,316
Interest expense	(2,444)	(2,136)
Other income (expense), net	(1,346)	92
Net loss	$ (60,117)	$ (67,180)
Net loss per share attributable to common stock—basic and diluted (in dollars per share)	$ (0.64)	$ (0.74)
Weighted average shares of common stock - basic and diluted (in shares)	93,442,706	90,610,416
Other comprehensive income
Foreign currency translation adjustments	$ (25)	$ 1
Unrealized gain on available-for-sale securities	559	0
Total comprehensive loss	(59,583)	(67,179)
Service
Revenue	111,478	88,768
Cost of revenue	98,368	84,395
Product
Revenue	79,517	21,373
Cost of revenue	$ 79,748	$ 22,993