Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Ordinary Shares	Additional paid in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2021		955,363,980
Beginning balance at Dec. 31, 2021	$ 1,379,956	$ 6	$ 2,825,948	$ (1,418,074)	$ (23,645)	$ (4,279)
Beginning balance (in shares) at Dec. 31, 2021						(382,930)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		514,800
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Exercise of share options (in shares)		1,156,660
Exercise of share options	297	$ 0	297
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(15,150)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(68)					$ (68)
Share-based compensation	12,410		12,410
Net loss	(82,394)			(82,394)
Foreign currency translation	(2,193)				(2,193)
Ending balance (in shares) at Mar. 31, 2022		957,035,440
Ending balance at Mar. 31, 2022	1,308,008	$ 6	2,838,655	(1,500,468)	(25,838)	$ (4,347)
Ending balance (in shares) at Mar. 31, 2022						(398,080)
Beginning balance (in shares) at Dec. 31, 2021		955,363,980
Beginning balance at Dec. 31, 2021	1,379,956	$ 6	2,825,948	(1,418,074)	(23,645)	$ (4,279)
Beginning balance (in shares) at Dec. 31, 2021						(382,930)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(381,517)
Foreign currency translation	63,194
Ending balance (in shares) at Sep. 30, 2022		961,829,720
Ending balance at Sep. 30, 2022	1,105,869	$ 6	2,877,361	(1,799,591)	39,549	$ (11,456)
Ending balance (in shares) at Sep. 30, 2022						(2,104,780)
Beginning balance (in shares) at Mar. 31, 2022		957,035,440
Beginning balance at Mar. 31, 2022	1,308,008	$ 6	2,838,655	(1,500,468)	(25,838)	$ (4,347)
Beginning balance (in shares) at Mar. 31, 2022						(398,080)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		683,700
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Exercise of share options (in shares)		2,801,000
Exercise of share options	4,322	$ 0	4,322
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(1,627,230)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(6,782)					$ (6,782)
Share-based compensation	14,225		14,225
Net loss	(137,933)			(137,933)
Foreign currency translation	30,325				30,325
Ending balance (in shares) at Jun. 30, 2022		960,520,140
Ending balance at Jun. 30, 2022	1,212,165	$ 6	2,857,202	(1,638,401)	4,487	$ (11,129)
Ending balance (in shares) at Jun. 30, 2022						(2,025,310)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		230,250
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Exercise of share options (in shares)		1,079,330
Exercise of share options	1,052	$ 0	1,052
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(79,470)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(327)					$ (327)
Share-based compensation	19,107		19,107
Net loss	(161,190)			(161,190)
Foreign currency translation	35,062				35,062
Ending balance (in shares) at Sep. 30, 2022		961,829,720
Ending balance at Sep. 30, 2022	$ 1,105,869	$ 6	2,877,361	(1,799,591)	39,549	$ (11,456)
Ending balance (in shares) at Sep. 30, 2022						(2,104,780)
Beginning balance (in shares) at Dec. 31, 2022	960,219,570	962,455,850
Beginning balance at Dec. 31, 2022	$ 1,045,595	$ 6	2,893,120	(1,861,360)	25,685	$ (11,856)
Beginning balance (in shares) at Dec. 31, 2022	(2,236,280)					(2,236,280)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		732,040
Issuance of ordinary shares upon vesting of restricted shares	$ 0	$ 0	0
Exercise of share options (in shares)		4,009,460
Exercise of share options	1,673	$ 0	1,673
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(1,272,330)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(5,130)					$ (5,130)
Share-based compensation	16,661		16,661
Net loss	(49,144)			(49,144)
Foreign currency translation	(8,413)				(8,413)
Ending balance (in shares) at Mar. 31, 2023		967,197,350
Ending balance at Mar. 31, 2023	$ 1,001,242	$ 6	2,911,454	(1,910,504)	17,272	$ (16,986)
Ending balance (in shares) at Mar. 31, 2023						(3,508,610)
Beginning balance (in shares) at Dec. 31, 2022	960,219,570	962,455,850
Beginning balance at Dec. 31, 2022	$ 1,045,595	$ 6	2,893,120	(1,861,360)	25,685	$ (11,856)
Beginning balance (in shares) at Dec. 31, 2022	(2,236,280)					(2,236,280)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (239,191)
Foreign currency translation	$ 22,267
Ending balance (in shares) at Sep. 30, 2023	969,037,150	973,930,280
Ending balance at Sep. 30, 2023	$ 880,979	$ 6	2,954,362	(2,100,551)	47,952	$ (20,790)
Ending balance (in shares) at Sep. 30, 2023	(4,893,130)					(4,893,130)
Beginning balance (in shares) at Mar. 31, 2023		967,197,350
Beginning balance at Mar. 31, 2023	$ 1,001,242	$ 6	2,911,454	(1,910,504)	17,272	$ (16,986)
Beginning balance (in shares) at Mar. 31, 2023						(3,508,610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		6,117,040
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Exercise of share options (in shares)		41,000
Exercise of share options	88	$ 0	88
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(1,280,500)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(3,540)					$ (3,540)
Share-based compensation	20,511		20,511
Net loss	(120,895)			(120,895)
Foreign currency translation	34,908				34,908
Ending balance (in shares) at Jun. 30, 2023		973,355,390
Ending balance at Jun. 30, 2023	932,314	$ 6	2,932,053	(2,031,399)	52,180	$ (20,526)
Ending balance (in shares) at Jun. 30, 2023						(4,789,110)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon vesting of restricted shares (in shares)		394,890
Issuance of ordinary shares upon vesting of restricted shares	0	$ 0	0
Exercise of share options (in shares)		180,000
Exercise of share options	317	$ 0	317
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation (in shares)						(104,020)
Receipt of shares netted to satisfy tax withholding obligations related to share-based compensation	(264)					$ (264)
Share-based compensation	21,992		21,992
Net loss	(69,152)			(69,152)
Foreign currency translation	$ (4,228)				(4,228)
Ending balance (in shares) at Sep. 30, 2023	969,037,150	973,930,280
Ending balance at Sep. 30, 2023	$ 880,979	$ 6	$ 2,954,362	$ (2,100,551)	$ 47,952	$ (20,790)
Ending balance (in shares) at Sep. 30, 2023	(4,893,130)					(4,893,130)