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Employees (Details) - employee	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure Of Employee Workforce [Line Items]
Average number of employees	68	67	40
France
Disclosure Of Employee Workforce [Line Items]
Average number of employees	41	38	28
United States
Disclosure Of Employee Workforce [Line Items]
Average number of employees	27	29	12

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- Definition

Disclosure Of Employee Workforce [Line Items]

+ References

No definition available.

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- Definition

The average number of personnel employed by the entity during a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
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-URIDate 2025-03-27

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