Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Warrant Liability, Current

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Warrants - Fair Value Assumptions (Details) $ in Thousands	Dec. 31, 2022 £ / shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2017 £ / shares shares
Class of Warrant or Right [Line Items]
Stock warrants (in shares) \| shares		12,401,262	31,115,926
Exercise price of stock warrant (in pound sterling per share) \| £ / shares	£ 1.7238		£ 1.7238
Expected term to exercise		3 months 29 days
Calculated value of the warrants, in thousands of U.S. dollars \| $		$ 0
Risk-free interest rate
Class of Warrant or Right [Line Items]
Measurement Input		0.0007
Annualized volatility
Class of Warrant or Right [Line Items]
Measurement Input		0.516
Dividend rate
Class of Warrant or Right [Line Items]
Measurement Input		0