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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (69,062) $ (59,945)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation expense 12,770 13,703
Foreign currency loss (gain) 819 (5,762)
Depreciation and amortization 6,497 6,339
Net change in right-of-use assets and liabilities (100) (104)
Loss on disposal of equipment, furniture and fixtures 434  
Amortization of interest on asset retirement obligations 97 89
Amortization of debt discount 546 538
Fair value adjustment   (53)
Gain on sale of nonfinancial assets (29,018)  
(Increase) decrease in operating assets:    
Accounts receivable - related party 7,764 (10,552)
Prepaid expenses 654 198
Tax incentive receivable 9,586  
Other current assets 905 196
Other assets, net 632 (15)
Increase (decrease) in operating liabilities:    
Accounts payable 5,670 13,072
Accrued expenses (24,928) (17,234)
Deferred revenue - related party 20,537 (6,874)
Net cash used in operating activities (56,197) (66,404)
Cash flows from investing activities:    
Purchase of property, plant and equipment (3,007) (13,580)
Proceeds from sale of nonfinancial assets 29,018  
Net cash provided by (used in) investing activities 26,011 (13,580)
Cash flows from financing activities:    
Payments of withholdings on shares withheld for income taxes (2,221) (1,231)
Proceeds from issuance of ordinary shares 3,198 61,950
Issuance costs in connection with ordinary shares (644) (4,003)
Net cash provided by financing activities 333 56,716
Net decrease in cash, cash equivalents and restricted cash (29,853) (23,268)
Effect of exchange rate changes on cash, cash equivalents and restricted cash 229 525
Cash, cash equivalents and restricted cash at beginning of the period 130,649 115,516
Cash, cash equivalents and restricted cash at end of the period 101,025 92,773
Supplemental disclosure of non-cash transactions:    
Fixed asset acquisition included in accounts payable and accrued expenses at end of the period 1,181 2,385
Issuance of shares in connection with asset acquisition   209
Supplemental disclosure of cash flow information:    
Cash paid for interest $ 5,891 $ 6,989