Note 6 - Fair Value Measurements - Change in Level 3 Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Beginning of period fair value | $ 80.1 | $ 59.0 | $ 146.1 | $ 117.6 |
| Fair value adjustments | (6.9) | 2.2 | (4.1) | 7.7 |
| Vesting of deferred bonuses | (0.5) | (2.8) | (87.6) | (84.3) |
| Amortization of deferred bonuses | 17.8 | 17.9 | 33.1 | 35.5 |
| Foreign currency translation | 1.1 | 0.0 | 2.8 | (0.2) |
| Additions | 19.0 | 0.0 | 20.6 | 0.0 |
| End of period fair value | 110.3 | 76.3 | 110.3 | 76.3 |
| Contingent Consideration Liability [Member] | ||||
| Settlement of contingent consideration | $ (0.3) | $ 0.0 | $ (0.6) | $ 0.0 |
| X | ||||||||||
- Definition Amount of amortization of deferred bonuses of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. No definition available.
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| X | ||||||||||
- Definition Amount of foreign currency translation of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. No definition available.
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| X | ||||||||||
- Definition Amount of vesting of deferred bonuses of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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