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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements The fair value hierarchy established by the accounting standards on fair value measurements includes three levels, which are based on the priority of the inputs to the valuation technique. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument. Financial assets and liabilities that are recorded in the Consolidated Balance Sheets are categorized based on the inputs to the valuation techniques as follows: Level 1. Financial assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market that we have the ability to access. Level 2. Financial assets and liabilities whose values are based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the asset or liability. Level 3. Financial assets and liabilities whose values are based on model inputs that are unobservable. Recurring Fair Value Measurements The following table presents our fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis as of March 31, 2026 and December 31, 2025, respectively:
| March 31, 2026 |
| Level 1 |  | Level 2 |  | Level 3 |  | Total |
| (In millions) |
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 135.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 135.7 |  |
Equity securities: |  |  |  |  |  |  |  |
Other | 1.1 |  |  | — |  |  | — |  |  | 1.1 |  |
Total equity securities | 1.1 |  |  | — |  |  | — |  |  | 1.1 |  |
Total assets | $ | 136.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 136.8 |  |
Liabilities: |  |  |  |  |  |  |  |
Put Right | $ | — |  |  | $ | 20.8 |  |  | $ | — |  |  | $ | 20.8 |  |
Total accounts payable and other accrued liabilities, current | — |  |  | 20.8 |  |  | — |  |  | 20.8 |  |
Total liabilities | $ | — |  |  | $ | 20.8 |  |  | $ | — |  |  | $ | 20.8 |  |
| December 31, 2025
| Level 1 |  | Level 2 |  | Level 3 |  | Total
| (In millions)
Assets: |  |  |  |  |  |  |
Cash and cash equivalents | $ | 182.0 |  |  | $ | — |  |  | $ | — |  |  | 182.0 |
Equity securities: |  |  |  |  |  |  |
Other | 1.4 |  |  | — |  |  | — |  |  | 1.4 |
Total equity securities | 1.4 |  |  | — |  |  | — |  |  | 1.4 |
Total assets | $ | 183.4 |  |  | $ | — |  |  | $ | — |  |  | $ | 183.4 |
Liabilities: |  |  |  |  |  |  |
Put Right | $ | — |  |  | $ | 15.0 |  |  | $ | — |  |  | $ | 15.0 |
Total accounts payable and other accrued liabilities, current | — |  |  | 15.0 |  |  | — |  |  | 15.0 |
Total liabilities | $ | — |  |  | $ | 15.0 |  |  | $ | — |  |  | $ | 15.0 |
The Put Right is accounted for at fair value calculated using a Monte Carlo Simulation with Level 2 fair value hierarchy inputs. The valuation model utilizes the stock price and growth rate of the Company's common stock, the two-year duration of the DSA, the implied volatility of the Company's common stock using comparable public companies and a discount rate based on US treasury securities of similar duration to the Put Right.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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