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Debt Obligations (Tables) | 9 Months Ended
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Sep. 30, 2025
Debt Disclosure [Abstract] |
Schedule of Debt and Finance Lease Obligations | Debt obligations, including finance lease obligations, consisted of the following (in millions):
| Maturity Date |  | September 30, 2025 |  | December 31, 2024
Infrastructure |  |
SOFR plus 2.75% Line of Credit | May 20, 2030 |  | $ | 20.0 |  |  | $ | — |
SOFR plus 2.75% Term Loan | May 20, 2030 |  | 83.9 |  |  | — |
PRIME minus 0.75% Line of Credit |  |  | — |  |  | 45.0 |
3.25% Term Loan |  |  | — |  |  | 74.6 |
PRIME minus 0.75% Term Loan |  |  | — |  |  | 24.5 |
Obligations under finance leases | Various |  | 0.2 |  |  | 0.6 |
Total Infrastructure |  |  | $ | 104.1 |  |  | $ | 144.7 |
Spectrum |  |  |  |  |
8.50% Note | September 30, 2026 |  | $ | 19.3 |  |  | $ | 19.3 |
11.45% Notes | September 30, 2026 |  | 50.4 |  |  | 50.4 |
Total Spectrum |  |  | $ | 69.7 |  |  | $ | 69.7 |
Life Sciences |  |  |  |  |
Lancer Promissory Note | August 1, 2026 |  | $ | 46.5 |  |  | $ | 24.0 |
Total Life Sciences |  |  | $ | 46.5 |  |  | $ | 24.0 |
Non-Operating Corporate |  |  |  |  |
10.50% Senior Secured Notes (1) | February 1, 2027 |  | $ | 360.4 |  |  | $ | — |
9.50% Convertible Senior Notes (1) | March 1, 2027 |  | 53.5 |  |  | — |
CGIC Promissory Note (1) | April 30, 2027 |  | 44.1 |  |  | 31.0 |
SOFR plus 5.75% Line of Credit | September 15, 2026 |  | 20.0 |  |  | 20.0 |
8.50% Senior Secured Notes | February 1, 2026 |  | 1.9 |  |  | 330.0 |
7.50% Convertible Senior Notes | August 1, 2026 |  | 0.2 |  |  | 48.9 |
Total Non-Operating Corporate |  |  | $ | 480.1 |  |  | $ | 429.9 |
Total outstanding principal |  |  | $ | 700.4 |  |  | $ | 668.3 |
Unamortized issuance discount, issuance premium, and deferred financing costs |  |  | (31.3) |  |  | (5.5) |
Less: current portion of debt obligations (1) |  |  | (571.8) |  |  | (162.2) |
Debt obligations, net of current portion |  |  | $ | 97.3 |  |  | $ | 500.6 |
(1) Certain debt instruments with long-term maturity dates have been classified as current obligations as of September 30, 2025, due to contingent mandatory prepayment provisions contained in the agreements that could require repayment within one year of the balance sheet date if certain asset sales occur, resulting in uncertainty regarding the timing of repayment.
Schedule of Maturities of Debt and Finance Lease Obligations | As of September 30, 2025, estimated future aggregate finance lease and principal debt payments based on contractual maturities, excluding interest, were as follows (in millions):
|  | Finance Leases |  | Debt |  | Total
2025 (remaining period) |  | $ | 0.1 |  |  | $ | 1.4 |  |  | $ | 1.5 |
2026 |  | 0.1 |  |  | 143.9 |  |  | 144.0 |
2027 |  | — |  |  | 464.3 |  |  | 464.3 |
2028 |  | — |  |  | 5.8 |  |  | 5.8 |
2029 |  | — |  |  | 6.4 |  |  | 6.4 |
Thereafter |  | — |  |  | 78.4 |  |  | 78.4 |
Total aggregate finance lease and debt principal payments |  | $ | 0.2 |  |  | $ | 700.2 |  |  | $ | 700.4 |

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