Consolidated statements of convertible preferred stock and stockholders' equity (deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2018	$ (211,476)			$ 2	$ 13,261	$ (224,725)		$ (14)
Temporary equity, shares at Dec. 31, 2018			102,030
Temporary equity, balance at Dec. 31, 2018			$ 216,446
Balance, shares at Dec. 31, 2018				17,445
Exercise of stock options	901				901
Exercise of stock options, shares				1,099
Stock-based compensation	3,156				3,156
Accumulated dividend—Series F	(7,234)					(7,234)
Temporary Equity, Accumulated dividend ? Series F			7,234
Accretion of Series F issuance costs	(74)				(74)
Temporary Equity, Accretion of Series F issuance costs			$ 74
Unrealized loss on investments	14							14
Net loss	(42,590)					(42,590)
Balance at Dec. 31, 2019	(257,303)	$ (364)		$ 2	17,244	(274,549)	$ (364)
Temporary equity, shares at Dec. 31, 2019			102,030
Temporary equity, balance at Dec. 31, 2019			$ 223,754
Balance, shares at Dec. 31, 2019				18,544
Exercise of stock options	$ 3,151				3,151
Exercise of stock options, shares	2,053			2,015
Exercise of warrants	$ 126				126
Exercise of warrants, shares				383
Stock-based compensation	11,058				11,058
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other offerings costs	171,129			$ 1	171,128
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other offering costs, shares				7,878
Issuance of common stock upon secondary public offering, net of underwriting discounts and commissions and other offering costs	65,112				65,112
Issuance of common stock upon secondary public offering, net of underwriting discounts and commissions and other offering costs, shares				1,000
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	211,902			$ 3	211,899
Temporary equity,Conversion of redeemable preferred stock to common stock upon initial public offering, shares			(102,030)
Temporary equity,Conversion of redeemable preferred stock to common stock upon initial public offering			$ (211,902)
Conversion of redeemable preferred stock to common stock upon initial public offering, shares				34,442
Conversion of redeemable convertible debt to common stock upon initial public offering	50,173			$ 1	50,172
Conversion of redeemable convertible debt to common stock upon initial public offering, shares				5,250
Accumulated dividend—Series F	(918)					(918)
Temporary Equity, Accumulated dividend ? Series F			918
Temporary Equity, Payment of Series F dividend			(12,814)
Accretion of Series F issuance costs	(44)				(44)
Temporary Equity, Accretion of Series F issuance costs			$ 44
Warrants issued in connection with debt	297				297
Net loss	(37,560)					(37,560)
Balance at Dec. 31, 2020	216,759			$ 7	530,143	(313,391)
Balance, shares at Dec. 31, 2020				69,512
Exercise of stock options	$ 6,540				6,540
Exercise of stock options, shares	2,426			2,427
Release of restricted stock units					0
Release of restricted stock units, shares				337
Issuance of common stock as consideration for an acquisition	$ 2,003				2,003
Issuance of common stock as consideration for an acquisition, shares				35
Stock-based compensation	25,424				25,424
Purchase of capped call	(35,570)				(35,570)
Total other comprehensive loss	(191)							(191)
Unrealized loss on investments	(191)
Net loss	(76,677)					(76,677)
Balance at Dec. 31, 2021	$ 138,288			$ 7	$ 528,540	$ (390,068)		$ (191)
Balance, shares at Dec. 31, 2021				72,311