Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues	$ 9,182	$ 17,359	$ 33,006	$ 57,246
Cost of revenues	5,853	12,746	20,291	37,254
Gross profit	3,329	4,613	12,715	19,992
Operating expenses:
General and administrative	5,448	9,673	20,438	29,442
Sales and marketing	3,335	9,695	9,766	31,049
Research and development	2,426	7,066	8,061	23,381
Total operating expenses	11,209	26,434	38,265	83,872
Operating loss	(7,880)	(21,821)	(25,550)	(63,880)
Other (expense) income:
Interest expense, net	(134)	(419)	(2,998)	(847)
Common stock warrant liability adjustment	2,395	2,867	2,679	4,802
Other (expense) income, net	(22)	6	(101)	115
Total other (expense) income, net	2,239	2,454	(420)	4,070
Loss before income tax provision	(5,641)	(19,367)	(25,970)	(59,810)
Income tax benefit (provision)	0	5	(5)	(28)
Net loss and comprehensive loss	(5,641)	(19,362)	(25,975)	(59,838)
Accretion on Series A convertible preferred stock	(1,319)	0	(3,298)	0
Net loss attributable to common stockholders, basic	(6,960)	(19,362)	(29,273)	(59,838)
Net loss attributable to common stockholders, diluted	$ (6,960)	$ (19,362)	$ (29,273)	$ (59,838)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.84)	$ (2.42)	$ (3.56)	$ (7.55)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.84)	$ (2.42)	$ (3.56)	$ (7.55)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic (in shares)	8,310,965	7,983,948	8,212,268	7,928,263
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted (in shares)	8,310,965	7,983,948	8,212,268	7,928,263