CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED SHARES AND STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	GSK [Member]	Series A, B, C and D Convertible Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member] GSK [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] GSK [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balances at Dec. 31, 2021	$ 88,289		$ 3	$ 32		$ 455,719		$ (367,463)	$ (2)
Balance, Shares at Dec. 31, 2021			3,218,152	32,393,738
Issuance of common stock upon the exercise of stock options	420					420
Issuance of common stock upon the exercise of stock options, Shares				56,120
Issuance of common stock, net of issuance costs	14,234	$ 10,278		$ 7	$ 7	14,227	$ 10,271
Issuance of common stock, net of issuance costs, shares				5,963,294	7,450,000
Conversion of convertible preferred stock to common stock	3		$ (3)	$ 6
Conversion of convertible preferred stock to common stock, shares			(3,218,152)	6,367,000
Share-based compensation expense	9,123					9,123
Unrealized gain on available-for-sale securities	2								2
Issuance of common stock upon the vesting of restricted stock units and performance stock units, Shares				226,043
Net income (loss)	(46,415)							(46,415)
Balances at Dec. 31, 2022	$ 75,934		$ 0	$ 52		489,760		(413,878)
Balance, shares at Dec. 31, 2022			0	52,456,195
Issuance of common stock upon the exercise of stock options, Shares	0
Issuance of common stock, net of issuance costs	$ 221					221
Issuance of common stock, net of issuance costs, shares				144,476
Share-based compensation expense	7,932					7,932
Unrealized gain on available-for-sale securities	0
Issuance of common stock upon the vesting of restricted stock units and performance stock units, Shares				399,009
Issuance of common stock upon the vesting of restricted stock units and performance stock units	1			$ 1
Net income (loss)	22,806							22,806
Balances at Dec. 31, 2023	$ 106,894		$ 0	$ 53		$ 497,913		$ (391,072)	$ 0
Balance, shares at Dec. 31, 2023			0	52,999,680