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v3.25.3

Business Segment Information - Summary of Disaggregated Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | $ 28 | $ 30 | $ 65 | $ 69
Operating expenses |  |  |  |
Cost of revenues | 0 | 1 | 0 | 3
Research and development expenses | 923 | 984 | 1,924 | 2,386
Selling, general and administrative expenses | 1,740 | 1,653 | 3,691 | 3,674
Royalty [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | 28 | 28 | 65 | 53
Product [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | 0 | 2 | 0 | 16
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | 28 | 30 | 65 | 69
Operating expenses |  |  |  |
Cost of revenues | 0 | 1 | 0 | 3
Research and development expenses | 855 | 902 | 1,787 | 2,220
Selling, general and administrative expenses | 1,677 | 1,511 | 3,558 | 3,391
Non-cash stock-based compensation | 72 | 155 | 150 | 311
Depreciation and amortization | 59 | 69 | 120 | 138
Total operating expense | 2,663 | 2,638 | 5,615 | 6,063
Consolidated operating loss | (2,635) | (2,608) | (5,550) | (5,994)
Operating Segments [Member] | Royalty [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | 28 | 28 | 65 | 53
Operating Segments [Member] | Product [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | $ 0 | $ 2 | $ 0 | $ 16

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