Consolidated Statements of Convertible Preferred Stock, Redeemable Common Stock and Stockholders' Equity (Deficit) - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Convertible Preferred Stock	Redeemable Common Stock
Beginning balance, convertible preferred stock (in share) at Dec. 31, 2018						40,079,567	107,371
Beginning balance, convertible preferred stock at Dec. 31, 2018						$ 64,675,000	$ 734,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity Repurchase Of Convertible Preferred Stock	$ 0
Conversion of redeemable common stock into common stock (in shares)		107,364					(107,371)
Conversion of redeemable common stock into common stock	734,000		$ 734,000				$ (734,000)
Conversion of convertible preferred shares into common stock (in shares)		3,808,430				(40,079,567)
Conversion of convertible preferred shares into common stock	64,675,000	$ 4,000	64,671,000			$ (64,675,000)
Ending balance, convertible preferred stock (in shares) at Dec. 31, 2019						0	0
Ending balance, convertible preferred stock at Dec. 31, 2019						$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2018		351,652
Beginning balance at Dec. 31, 2018	(77,086,000)	$ 0	2,151,000	$ 0	$ (79,237,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of common stock in connection with Merger (in shares)		2,440,582
Exchange of common stock in connection with Merger	45,541,000	$ 2,000	45,539,000
Fair value of replacement equity awards	817,000		817,000
Reclassification of warrant liability to permanent equity	5,235,000		5,235,000
Issuance of common stock and prefunded warrants for the purchase of common stock, net of issuance costs of $11.5 million (in shares)		9,336,667
Issuance of common stock and prefunded warrants for the purchase of common stock, net of issuance costs of $11.4 million	139,388,000	$ 9,000	139,379,000
Exercise of stock options (in shares)		50,321
Exercise of stock options	345,000	$ 1,000	344,000
Exercise of warrants (in shares)		33,846
Exercise of warrants	447,000		447,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	2,050,000		2,050,000
Foreign currency translation adjustment	(119,000)			(119,000)
Net loss	(52,807,000)				(52,807,000)
Ending balance (in shares) at Dec. 31, 2019		16,128,862
Ending balance at Dec. 31, 2019	129,220,000	$ 16,000	261,367,000	(119,000)	(132,044,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity Repurchase Of Convertible Preferred Stock	0
Conversion of redeemable common stock into common stock	0
Ending balance, convertible preferred stock (in shares) at Dec. 31, 2020
Ending balance, convertible preferred stock at Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		17,689
Exercise of stock options	127,000	$ 0	127,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 5,428,000		5,428,000
Issuance of shares under employee stock purchase plan (in shares)	26,643
Issuance of shares under employee stock purchase plan	$ 169,000		169,000
Vesting of restricted stock units, less shares withheld and retired to satisfy tax obligations (in shares)	132,537
Vesting of restricted stock units, less shares withheld and retired to satisfy tax obligations	$ (14,000)		(14,000)
Net loss	(62,131,000)				(62,131,000)
Ending balance (in shares) at Dec. 31, 2020		16,305,731
Ending balance at Dec. 31, 2020	72,799,000	$ 16,000	267,077,000	(119,000)	(194,175,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity Repurchase Of Convertible Preferred Stock	(13,943,000)
Issuance cost of convertible preferred stock, net of issuance cost (in shares)		9,435,951					229,885
Issuance costs of convertible preferred stock, net of issuance costs	73,868,000	$ 10,000	73,858,000				$ 1,875
Conversion of redeemable common stock into common stock	$ 0
Ending balance, convertible preferred stock (in shares) at Dec. 31, 2021							0
Ending balance, convertible preferred stock at Dec. 31, 2021							$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	5,860	5,860
Exercise of stock options	$ 40,000		40,000
Exercise of warrants (in shares)		2,129,768
Exercise of warrants	2,000	$ 2,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 6,180,000		6,180,000
Issuance of shares under employee stock purchase plan (in shares)	45,816
Issuance of shares under employee stock purchase plan	$ 219,000		219,000
Vesting of restricted stock units, less shares withheld and retired to satisfy tax obligations (in shares)		204,531
Vesting of restricted stock units, less shares withheld and retired to satisfy tax obligations	0
Net loss	(88,696,000)				(88,696,000)
Ending balance (in shares) at Dec. 31, 2021		28,127,657
Ending balance at Dec. 31, 2021	$ 64,412,000	$ 28,000	$ 347,374,000	$ (119,000)	$ (282,871,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased and Retired During Period, Shares	(229,885)
Stock Repurchased and Retired During Period, Value	$ 0						$ (1,875)