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Business Segment Information (Tables) | 9 Months Ended
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Dec. 31, 2024
Segment Reporting [Abstract] |
Summary of Segment Revenues | Segment revenues consisted of the following (in thousands):
| Three Months Ended |  |  | Three Months Ended |  |  | Nine Months Ended |  |  | Nine Months Ended |  |
| December 31, 2024 |  |  | December 31, 2023 |  |  | December 31, 2024 |  |  | December 31, 2023 |  |
R&D |  |  |  |  |  |  |  |  |  |  |  |
Royalty revenue | $ | 15 |  |  | $ | 5 |  |  | $ | 68 |  |  | $ | 80 |  |
Mosaic |  |  |  |  |  |  |  |  |  |  |  |
Product revenue |  | 9 |  |  |  | — |  |  |  | 25 |  |  |  | — |  |
Total segment revenue | $ | 24 |  |  | $ | 5 |  |  | $ | 93 |  |  | $ | 80 |  |
Total Company revenue | $ | 24 |  |  | $ | 5 |  |  | $ | 93 |  |  | $ | 80 |  |
Summary of Operating Segment Costs and Expenses | Operating segment costs and expenses consisted of the following (in thousands):
| Three Months Ended |  |  | Three Months Ended |  |  | Nine Months Ended |  |  | Nine Months Ended |  |
| December 31, 2024 |  |  | December 31, 2023 |  |  | December 31, 2024 |  |  | December 31, 2023 |  |
R&D |  |  |  |  |  |  |  |  |  |  |  |
Research and development expenses | $ | 899 |  |  | $ | 1,434 |  |  | $ | 3,010 |  |  | $ | 4,435 |  |
Mosaic |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues |  | 2 |  |  |  | — |  |  |  | 5 |  |  |  | — |  |
Research and development expenses |  | 881 |  |  |  | — |  |  |  | 1,156 |  |  |  | — |  |
Selling, general, and administrative expenses |  | 43 |  |  |  | — |  |  |  | 178 |  |  |  | — |  |
Total segment costs and expenses | $ | 1,825 |  |  | $ | 1,434 |  |  | $ | 4,349 |  |  | $ | 4,435 |  |
Other selling, general, and administrative expenses |  | 1,667 |  |  |  | 2,251 |  |  |  | 5,206 |  |  |  | 7,635 |  |
Total Company costs and expenses | $ | 3,492 |  |  | $ | 3,685 |  |  | $ | 9,555 |  |  | $ | 12,070 |  |
Summary of Operating Segment Assets | Operating segment assets consisted of the following (in thousands):
| December 31, 2024 |  |  | March 31, 2024 |
R&D |  |  |  |  |
Fixed assets, net | $ | 448 |  |  | $ | 423 |
Mosaic |  |  |  |  |
Fixed assets, net |  | — |  |  |  | 183 |
Inventory |  | — |  |  |  | 297 |
Total segment assets | $ | 448 |  |  | $ | 903 |
Other Company assets |  | 3,396 |  |  |  | 5,446 |
Total Company assets | $ | 3,844 |  |  | $ | 6,349 |

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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