Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (audited) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Series C Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings
Balance at Dec. 31, 2019	$ (123,338)				$ 4,419	$ (127,757)
Balance, Shares at Dec. 31, 2019		209,119,674		230,860
Temporary equity balance, Value at Dec. 31, 2019		$ 130,666
Issuance of Series C redeemable convertible preferred stock, net of issuance costs			$ 29,446
Issuance of Series C redeemable convertible preferred stock, net of issuance costs, Shares			78,306,611
Accretion of convertible preferred stock to redemption value	(115)				(115)
Temporary equity, Accretion of convertible preferred stock to redemption value		$ 115
Issuance of common stock warrants in conjunction with sale of Series C redeemable convertible preferred stock	740				740
Conversion of redeemable convertible preferred stock to common stock upon closing of initial public offering	160,227		$ (160,227)	$ 8	160,219
Conversion of redeemable convertible preferred stock to common stock upon closing of initial public offering, Shares			(287,426,285)	8,335,248
Issuance of common stock from initial public offering, net of issuance costs	57,284			$ 4	57,280
Issuance of common stock from initial public offering, net of issuance costs, Shares				4,025,000
Vesting of restricted common stock				24,661
Issuance of common stock upon exercise of warrants				$ 1	(1)
Issuance of common stock upon exercise of warrants, Shares				313,794
Exercise of common stock options	8				8
Exercise of common stock options, Shares				2,814
Stock-based compensation	1,813				1,813
Net loss	(22,127)					(22,127)
Balance at Dec. 31, 2020	74,492			$ 13	224,363	(149,884)
Balance, Shares at Dec. 31, 2020				12,932,377
Vesting of restricted common stock				2,600
Exercise of common stock options	$ 604				604
Exercise of common stock options, Shares	72,201			72,201
Stock-based compensation	$ 2,733				2,733
Net loss	(43,513)					(43,513)
Balance at Dec. 31, 2021	$ 34,316			$ 13	$ 227,700	$ (193,397)
Balance, Shares at Dec. 31, 2021				13,007,178