Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Ordinary Shares	Additional paid in capital	Accumulated deficit	Accumulated other comprehensive income	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2023		977,151,270
Beginning balance at Dec. 31, 2023	$ 796,118	$ 6	$ 2,975,302	$ (2,195,980)	$ 37,626	$ (20,836)
Beginning balance (in shares) at Dec. 31, 2023						(4,912,200)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		1,046,440
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Share-based compensation	17,980		17,980
Net loss	(53,471)			(53,471)
Foreign currency translation	1,542				1,542
Ending balance (in shares) at Mar. 31, 2024		978,197,710
Ending balance at Mar. 31, 2024	$ 762,169	$ 6	2,993,282	(2,249,451)	39,168	$ (20,836)
Ending balance (in shares) at Mar. 31, 2024						(4,912,200)
Beginning balance (in shares) at Dec. 31, 2024	1,077,702,540	1,082,614,740
Beginning balance at Dec. 31, 2024	$ 840,898	$ 7	3,264,295	(2,453,083)	50,515	$ (20,836)
Beginning balance (in shares) at Dec. 31, 2024	(4,912,200)					(4,912,200)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		137,540
Issuance of ordinary shares upon vesting of restricted shares	$ 0	$ 0	0
Exercise of share options (in shares)		6,324,120
Exercise of share options	3,733	$ 0	3,733
Issuance cost of the follow-on public offering	(28)		(28)
Share-based compensation	15,800		15,800
Net loss	(48,438)			(48,438)
Foreign currency translation	$ (1,212)				(1,212)
Ending balance (in shares) at Mar. 31, 2025	1,084,164,200	1,089,076,400
Ending balance at Mar. 31, 2025	$ 810,753	$ 7	$ 3,283,800	$ (2,501,521)	$ 49,303	$ (20,836)
Ending balance (in shares) at Mar. 31, 2025	(4,912,200)					(4,912,200)