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v3.26.1

General and Administrative (Tables) | 12 Months Ended
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Dec. 31, 2025
General and Administrative Expense [Abstract] |
Schedule of general and administrative |
|  | Year ended |  |  | Year ended |  |  | Year ended |
|  | December 31, |  |  | December 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |  |  | 2023 |
|  | USD thousands |  |  | USD thousands |  |  | USD thousands |
Salaries, fees and related expenses |  |  | 1,043 |  |  |  | 1,085 |  |  |  | 2,545 |
Professional services |  |  | 1,239 |  |  |  | 1,115 |  |  |  | 2,139 |
Share-based compensation |  |  | 465 |  |  |  | 216 |  |  |  | 1,084 |
Fees to directors |  |  | 286 |  |  |  | 284 |  |  |  | 258 |
Directors' and officers' insurance |  |  | 499 |  |  |  | 538 |  |  |  | 648 |
Lease and maintenance |  |  | 60 |  |  |  | 50 |  |  |  | 81 |
Other expenses |  |  | 142 |  |  |  | 124 |  |  |  | 323 |
|  |  | 3,734 |  |  |  | 3,412 |  |  |  | 7,078 |

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- Definition Tabular disclosure of general and administrative expenses. + References No definition available. + Details
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Namespace Prefix: | cmmb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_GeneralAndAdministrativeExpenseAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration