Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue	$ 471,315	$ 213,665	$ 739,634	$ 404,660
Cost of revenue	345,179	167,626	571,140	345,742
Gross profit	126,136	46,039	168,494	58,918
Operating expenses
Technology and development	41,488	17,961	69,166	38,235
Marketing	55,398	9,482	67,200	35,190
General and administrative	59,567	23,022	96,957	47,349
Total operating expenses	156,453	50,465	233,323	120,774
Loss from operations	(30,317)	(4,426)	(64,829)	(61,856)
Investment Income, Interest	135	437	293	1,540
Interest expense	(2,813)	(2,665)	(4,151)	(5,109)
Income tax benefit	5,052	0	5,052	0
Other income (expense), net	65	43	(27)	(1,303)
Net loss	(27,878)	(6,611)	(63,662)	(66,728)
Dividends on convertible preferred stock	(1,878)	(1,284)	(4,214)	(1,284)
Net loss attributable to common stock - basic	(29,756)	(7,895)	(67,876)	(68,012)
Net loss attributable to common stock - diluted	$ (29,756)	$ (7,895)	$ (67,876)	$ (68,012)
Net loss per share attributable to common stock - basic (in dollars per share)	$ (0.29)	$ (0.08)	$ (0.65)	$ (0.71)
Net loss per share attributable to common stock - diluted (in dollars per share)	$ (0.29)	$ (0.08)	$ (0.65)	$ (0.71)
Weighted average shares - basic (in shares)	104,391,337	98,785,318	103,912,212	96,114,012
Weighted averages shares - diluted (in shares)	104,391,337	98,785,318	103,912,212	96,114,012
Net loss	$ (27,878)	$ (6,611)	$ (63,662)	$ (66,728)
Other comprehensive income (loss)
Foreign currency translation adjustments	0	3	0	(22)
Unrealized gain (loss) on available-for-sale debt securities	84	(137)	134	421
Comprehensive loss	(27,794)	(6,745)	(63,528)	(66,329)
Service
Revenue	298,870	141,135	474,463	252,613
Cost of revenue	177,762	93,891	312,613	192,259
Product
Revenue	172,445	72,530	265,171	152,047
Cost of revenue	$ 167,417	$ 73,735	$ 258,527	$ 153,483