Marketable securities - Schedule of Marketable Securities (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Marketable securities | ||
| Market value, current | $ 2.7 | $ 2.9 |
| Market value, noncurrent | 6.5 | 6.1 |
| Unrealized gain, net | 0.2 | 0.2 |
| Current assets | ||
| Marketable securities | ||
| Market value, current | 2.7 | 2.9 |
| Cost or amortized cost | 2.7 | 2.9 |
| Noncurrent assets | ||
| Marketable securities | ||
| Market value, noncurrent | 6.5 | 6.1 |
| Cost or amortized cost | $ 6.3 | $ 5.9 |
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in marketable security, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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. No definition available.
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- Definition Amount of investment in marketable security, classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of unrealized gain (loss) on investment in marketable security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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