Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 540,074	$ 236,916	$ 1,279,708	$ 641,576
Cost of revenue	412,772	143,844	983,912	489,586
Gross profit	127,302	93,072	295,796	151,990
Operating expenses
Technology and development	43,658	22,452	112,824	60,687
Marketing	49,143	12,421	116,343	47,611
General and administrative	54,395	21,190	151,352	68,539
Total operating expenses	147,196	56,063	380,519	176,837
(Loss) Income from operations	(19,894)	37,009	(84,723)	(24,847)
Interest income	178	319	472	1,859
Interest expense	(3,672)	(2,522)	(7,822)	(7,631)
Income tax benefit	311	0	5,363	0
Other income (expense), net	4,128	(640)	4,099	(1,943)
Net (loss) income	(18,949)	34,166	(82,611)	(32,562)
Dividends on convertible preferred stock	(1,662)	(1,530)	(5,875)	(2,814)
Undistributed earnings attributable to participating securities	0	(653)	0	0
Net loss attributable to common stock - basic	(20,611)	31,983	(88,486)	(35,376)
Net loss attributable to common stock - diluted	$ (20,611)	$ 31,983	$ (88,486)	$ (35,376)
Net loss per share attributable to common stock - basic (in dollars per share)	$ (0.20)	$ 0.32	$ (0.85)	$ (0.36)
Weighted average shares - basic (in shares)	105,144,872	99,840,144	104,327,614	97,365,122
Weighted averages shares - diluted (in shares)	105,144,872	107,607,711	104,327,614	97,365,122
Net loss per share attributable to common stock - diluted (in dollars per share)	$ (0.20)	$ 0.30	$ (0.85)	$ (0.36)
Net loss	$ (18,949)	$ 34,166	$ (82,611)	$ (32,562)
Other comprehensive income (loss)
Foreign currency translation adjustments	3	6	3	(16)
Unrealized gain (loss) on available-for-sale debt securities	27	(139)	161	282
Comprehensive (loss) income	(18,919)	34,033	(82,447)	(32,296)
Service
Revenue	301,657	217,280	776,120	469,893
Cost of revenue	174,267	122,583	486,880	314,842
Product
Revenue	238,417	19,636	503,588	171,683
Cost of revenue	$ 238,505	$ 21,261	$ 497,032	$ 174,744