Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Ordinary Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Total
Beginning balance at Dec. 31, 2021	$ 384	$ 567,637	$ (3,388)	$ (218,379)	$ 346,254
Beginning balance (in shares) at Dec. 31, 2021	29,579,364
Increase (decrease) in shareholders' equity (deficit)
Issuance of ADSs upon exercise of share options	$ 1	449			450
Issuance of ADSs upon exercise of share options (in shares)	30,074
Issuance of ADSs upon vesting of restricted share units (in shares)	35,000
Share-based compensation expense		10,198			10,198
Foreign currency translation adjustment			920		920
Net loss				(27,564)	(27,564)
Ending balance at Mar. 31, 2022	$ 385	578,284	(2,468)	(245,943)	330,258
Ending balance (in shares) at Mar. 31, 2022	29,644,438
Beginning balance at Dec. 31, 2022	$ 387	601,105	387	(331,096)	$ 270,783
Beginning balance (in shares) at Dec. 31, 2022	29,873,893				29,873,893
Increase (decrease) in shareholders' equity (deficit)
Issuance of ADSs upon exercise of share options		1			$ 1
Issuance of ADSs upon exercise of share options (in shares)	877
Issuance of ADSs, net of commissions and offering expenses	$ 1	2,715			2,716
Issuance of ADSs, net of commissions and offering expenses (in shares)	100,000
Issuance of ADSs upon vesting of restricted share units	$ 1				1
Issuance of ADSs upon vesting of restricted share units (in shares)	56,988
Share-based compensation expense		9,042			9,042
Foreign currency translation adjustment			(316)		(316)
Net loss				(39,064)	(39,064)
Ending balance at Mar. 31, 2023	$ 389	$ 612,863	$ 71	$ (370,160)	$ 243,163
Ending balance (in shares) at Mar. 31, 2023	30,031,758				30,031,758