Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 74,173	$ 41,324	$ 187,179	$ 107,291
Cost of revenue	19,301	10,047	44,783	29,733
Gross profit	54,872	31,277	142,396	77,558
Operating expenses:
Marketing	38,293	15,102	93,195	39,675
Selling, general, and administrative	44,240	19,496	142,678	48,401
Total operating expenses	82,533	34,598	235,873	88,076
Loss from operations	(27,661)	(3,321)	(93,477)	(10,518)
Other income (expense):
Change in fair value of liabilities	8,328	(2,527)	13,610	(2,477)
Interest expense	0	0	0	(10)
Other income, net	219	8	320	223
Total other income (expense), net	8,547	(2,519)	13,930	(2,264)
Loss before income taxes	(19,114)	(5,840)	(79,547)	(12,782)
Benefit (provision) for income taxes	3,173	(31)	3,049	(103)
Net loss	(15,941)	(5,871)	(76,498)	(12,885)
Other comprehensive (loss) income	(12)	6	(41)	(12)
Total comprehensive loss	$ (15,953)	$ (5,865)	$ (76,539)	$ (12,897)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.08)	$ (0.16)	$ (0.42)	$ (0.36)
Diluted (in dollars per share)	$ (0.08)	$ (0.16)	$ (0.42)	$ (0.36)
Weighted average shares outstanding:
Basic (in shares)	200,038,761	35,614,598	181,867,522	35,345,972
Diluted (in shares)	200,038,761	35,614,598	181,867,522	35,345,972