Shareholders' equity - Additional Information (Details) |
Sep. 30, 2026
USD ($)
shares
|
Sep. 30, 2026
EUR (€)
€ / shares
shares
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Jun. 11, 2026
USD ($)
|
Jun. 03, 2026
USD ($)
|
Jun. 03, 2026
EUR (€)
|
Dec. 31, 2025
€ / shares
|
Dec. 31, 2025
USD ($)
shares
|
|---|---|---|---|---|---|---|---|
| Class of Stock [Line Items] | |||||||
| Share capital | $ 36,064,786.19 | € 31,438,880.7 | $ 26,911,786 | ||||
| Shares, outstanding (in shares) | shares | 314,388,807 | 314,388,807 | 235,670,864 | ||||
| Common stock, par value (in euro per share) | € / shares | € 0.10 | € 0.10 | |||||
| Additional paid-in capital | $ | $ 459,200,000 | $ 541,300,000 | |||||
| Retained earnings charged on share premium | |||||||
| Class of Stock [Line Items] | |||||||
| Additional paid-in capital | $ (220,800,000) | $ (220,838,268) | € (190,148,327) |
| X | ||||||||||
- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition 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. 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://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares issued which are neither cancelled nor held in the treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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