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Summary of Significant Accounting Policies (Narrative) (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2023 | Dec. 31, 2024 USD ($) segment county | Dec. 31, 2023 USD ($) | Dec. 31, 2024 GBP (£) county
Summary of Significant Accounting Policies |  |  |  |
Cash and cash equivalents |  | $ 3,137,000 | $ 3,378,000 |
Cash exceeding balance insured by FDIC |  | $ 2,800,000 |  |
Cash balance insured by FSCS | £ |  |  |  | £ 85,000
Number of operating segments | segment |  | 1 |  |
Number of reportable segments | segment |  | 1 |  |
Number of geographic areas for development operations | county |  | 2 |  | 2
Revenues |  | $ 43,000 | 420,000 |
Stock awards vesting period | 3 years |  |  |
Reclassifications out of other comprehensive income (loss) |  | 0 | $ 0 |
Revenue, Remaining performance obligation |  | $ 0 |  |
Minimum |  |  |  |
Summary of Significant Accounting Policies |  |  |  |
Stock awards vesting period |  | 3 years |  |
Minimum | Property and equipment |  |  |  |
Summary of Significant Accounting Policies |  |  |  |
Estimated useful life |  | 3 years |  | 3 years
Maximum |  |  |  |
Summary of Significant Accounting Policies |  |  |  |
Cash balances insured by FDIC |  | $ 250,000 |  |
Stock awards vesting period |  | 4 years |  |
Maximum | Property and equipment |  |  |  |
Summary of Significant Accounting Policies |  |  |  |
Estimated useful life |  | 5 years |  | 5 years
Board of Directors |  |  |  |
Summary of Significant Accounting Policies |  |  |  |
Stock awards vesting period |  | 1 year |  |

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