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Revenue recognition (Tables) | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The Company's revenues disaggregated by major sources for the three months ended March 31, 2025 and 2024 were as follows:
| Three Months Ended March 31, 2025 |  | Three Months Ended March 31, 2024
| USG |  | Non-USG |  | Total |  | USG |  | Non-USG |  | Total
Commercial Product sales | $ | 0.1 |  |  | $ | 45.2 |  |  | $ | 45.3 |  |  | $ | 0.3 |  |  | $ | 118.2 |  |  | $ | 118.5 |
MCM Product sales | 66.6 |  |  | 90.0 |  |  | 156.6 |  |  | 114.1 |  |  | 41.3 |  |  | 155.4 |
All other revenues (1) | 12.1 |  |  | 8.2 |  |  | 20.3 |  |  | 7.4 |  |  | 19.1 |  |  | 26.5 |
Total revenues | $ | 78.8 |  |  | $ | 143.4 |  |  | $ | 222.2 |  |  | $ | 121.8 |  |  | $ | 178.6 |  |  | $ | 300.4 |
(1) “All other revenues” includes Services and Contracts and grants revenue.
Schedule of Rollforward of Contract Liabilities | The following table presents the roll forward of the contract liability balances:
|  | Contract Liabilities
Balance at December 31, 2024 |  | $ | 9.3 |
Balance at March 31, 2025 |  | $ | 8.9 |
Revenue recognized in the period from amounts included in contract liability at the beginning of the period: |  | $ | 1.3 |
Schedule of Accounts Receivable, Net | Accounts receivable, including unbilled accounts receivable contract assets, consist of the following:
| March 31, 2025 |  | December 31, 2024
Accounts receivable: |  |  |
Billed | $ | 174.0 |  |  | $ | 135.4 |
Unbilled | 30.9 |  |  | 19.6 |
Allowance for expected credit losses | (1.2) |  |  | (0.5) |
Accounts receivable, net | $ | 203.7 |  |  | $ | 154.5 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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