CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) $ in Thousands |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2024
USD ($)
shares
|
Dec. 31, 2023
USD ($)
shares
|
Mar. 31, 2024
£ / shares
|
Dec. 31, 2023
£ / shares
|
|
| CONDENSED CONSOLIDATED BALANCE SHEETS | ||||
| Marketable securities - amortized cost | $ 2,981 | $ 2,940 | ||
| Marketable securities - Net of allowance for expected credit losses | 0 | 0 | ||
| Allowance for expected credit losses | 0 | 0 | ||
| Operating lease right-of-use assets, accumulated amortization | 14,381 | 13,220 | ||
| Property, plant and equipment, accumulated depreciation | 48,445 | 46,020 | ||
| Intangibles, accumulated amortization | $ 5,198 | $ 5,155 | ||
| Common stock, par value | £ / shares | £ 0.001 | £ 0.001 | ||
| Common stock, shares authorized | shares | 1,702,760,280 | 1,702,760,280 | ||
| Common stock, shares issued | shares | 1,532,974,878 | 1,363,008,102 | ||
| Common stock, shares outstanding | shares | 1,532,974,878 | 1,363,008,102 |
| X | ||||||||||
- Definition Amount of accumulated amortization of operating lease right-of-use assets. No definition available.
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| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amortized cost, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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