Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Previously Reported	Revision of Prior Period, Reclassification, Adjustment	Common Stock	Common Stock Previously Reported	Common Stock Revision of Prior Period, Reclassification, Adjustment	Additional Paid-in Capital	Additional Paid-in Capital Previously Reported	Additional Paid-in Capital Revision of Prior Period, Reclassification, Adjustment	Accumulated Other Comprehensive (Loss)	Accumulated Other Comprehensive (Loss) Previously Reported	Accumulated Deficit	Accumulated Deficit Previously Reported	Redeemable Convertible Preferred Stock Previously Reported	Redeemable Convertible Preferred Stock Revision of Prior Period, Reclassification, Adjustment
Temporary equity, Balance at the beginning at Dec. 31, 2020														$ 133,097	$ (133,097)
Temporary equity, Balance at the beginning (in shares) at Dec. 31, 2020														95,290,000	(95,290,000)
Balance at the beginning at Dec. 31, 2020	$ 47,293	$ (85,804)	$ 133,097	$ 2	$ 1	$ 1	$ 135,292	$ 2,196	$ 133,096		$ 0	$ (88,001)	$ (88,001)
Balance at the beginning (in shares) at Dec. 31, 2020				18,257,000	8,649,000	9,608,000
Exercises of stock options	196						196
Exercises of stock options, shares				76,000
Restricted stock granted, shares				123,000
Reclassification to liability for early exercised stock options	(120)						(120)
Vesting of early exercised stock options	30						30
Stock-based compensation expense	475						475
Net loss	(13,022)											(13,022)
Balance at the end at Mar. 31, 2021	34,852			$ 2			135,873			$ 0		(101,023)
Balance at the end (in shares) at Mar. 31, 2021				18,456,000
Temporary equity, Balance at the beginning at Dec. 31, 2020														$ 133,097	$ (133,097)
Temporary equity, Balance at the beginning (in shares) at Dec. 31, 2020														95,290,000	(95,290,000)
Balance at the beginning at Dec. 31, 2020	47,293	$ (85,804)	$ 133,097	$ 2	$ 1	$ 1	135,292	$ 2,196	$ 133,096		$ 0	(88,001)	$ (88,001)
Balance at the beginning (in shares) at Dec. 31, 2020				18,257,000	8,649,000	9,608,000
Issuance of common stock under Equity Purchase Agreement	0
Repurchase of early exercised stock options	1
Net loss	(25,675)
Balance at the end at Jun. 30, 2021	22,822			$ 2			136,496					(113,676)
Balance at the end (in shares) at Jun. 30, 2021				18,559,000
Balance at the beginning at Mar. 31, 2021	34,852			$ 2			135,873			0		(101,023)
Balance at the beginning (in shares) at Mar. 31, 2021				18,456,000
Exercises of stock options	109						109
Exercises of stock options, shares				50,000
Restricted stock granted, shares				70,000
Restricted stock forfeited, shares				(16,000)
Reclassification to liability for early exercised stock options	(65)						(65)
Vesting of early exercised stock options	47						47
Repurchase of early exercised stock options, shares				(1,000)
Stock-based compensation expense	532						532
Net loss	(12,653)											(12,653)
Balance at the end at Jun. 30, 2021	22,822			$ 2			136,496					(113,676)
Balance at the end (in shares) at Jun. 30, 2021				18,559,000
Balance at the beginning at Dec. 31, 2021	109,700			$ 4			252,464			(119)		(142,649)
Balance at the beginning (in shares) at Dec. 31, 2021				35,034,000
Issuance of common stock under Equity Purchase Agreement, shares				100,000
Issuance of common stock under Equity Purchase Agreement	273						273
Vesting of early exercised stock options	30						30
Repurchase of early exercised stock options, shares				(8,000)
Stock-based compensation expense	916						916
Other comprehensive loss	(310)									(310)
Net loss	(7,947)											(7,947)
Balance at the end at Mar. 31, 2022	102,662			$ 4			253,683			(429)		(150,596)
Balance at the end (in shares) at Mar. 31, 2022				35,126,000
Balance at the beginning at Dec. 31, 2021	109,700			$ 4			252,464			(119)		(142,649)
Balance at the beginning (in shares) at Dec. 31, 2021				35,034,000
Issuance of common stock under Equity Purchase Agreement	273
Repurchase of early exercised stock options	3
Net loss	(21,872)
Balance at the end at Jun. 30, 2022	89,696			$ 4			254,689			(476)		(164,521)
Balance at the end (in shares) at Jun. 30, 2022				35,124,000
Balance at the beginning at Mar. 31, 2022	102,662			$ 4			253,683			(429)		(150,596)
Balance at the beginning (in shares) at Mar. 31, 2022				35,126,000
Vesting of early exercised stock options	27						27
Repurchase of early exercised stock options, shares				(2,000)
Stock-based compensation expense	979						979
Other comprehensive loss	(47)									(47)
Net loss	(13,925)											(13,925)
Balance at the end at Jun. 30, 2022	$ 89,696			$ 4			$ 254,689			$ (476)		$ (164,521)
Balance at the end (in shares) at Jun. 30, 2022				35,124,000