Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues	$ 31,505	$ 21,169	$ 78,354	$ 54,405
Cost of revenues	16,624	11,344	37,272	28,696
Gross profit	14,881	9,825	41,082	25,709
Operating expenses:
General and administrative	9,250	3,173	22,516	8,593
Sales and marketing	13,072	5,041	26,759	13,101
Research and development	6,320	2,730	14,269	7,634
Total operating expenses	28,642	10,944	63,544	29,328
Operating loss	(13,761)	(1,119)	(22,462)	(3,619)
Other income (expense):
Gain on loan forgiveness	0	0	2,098	0
Interest expense, net	(477)	(377)	(1,378)	(1,010)
Interest expense from contingent beneficial conversion feature	(26,061)	0	(26,061)	0
Preferred stock warrant liability adjustment	0	1	(5,578)	9
Common stock warrant liability adjustment	5,792	0	5,792	0
Loss on extinguishment of debt	0	0	(182)	(172)
Other income (expense) net	66	(6)	146	69
Total other income (expense), net	(20,680)	(382)	(25,163)	(1,104)
Loss before income tax provision	(34,441)	(1,501)	(47,625)	(4,723)
Income tax provision	(15)	0	(22)	0
Net loss and comprehensive loss	$ (34,456)	$ (1,501)	$ (47,647)	$ (4,723)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.36)	$ (0.07)	$ (1.00)	$ (0.22)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic and diluted	96,681,887	22,016,451	47,421,668	21,925,268