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Note 1 - Significant Accounting Policies (Tables) | 12 Months Ended
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Mar. 31, 2025
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
Disaggregation of revenue (in 000's) |  | 2025 |  |  | 2024 |
Net revenues by type: |  |  |  |  |  |  |  |
Net product sales |  | $ | 10,449 |  |  | $ | 8,677 |
Licensing revenue |  |  | 336 |  |  |  | 218 |
Royalty income |  |  | — |  |  |  | 175 |
Total: |  |  | 10,785 |  |  |  | 9,070 |
Net revenues by customers: (over 10%) |  |  |  |  |  |  |  |
Amazon |  | $ | 4,156 |  |  | $ | 1,815 |
Walmart |  |  | 3,322 |  |  |  | 4,769 |
Total: |  |  | 7,478 |  |  |  | 6,584 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | As of March 31, |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Trade receivables |  | $ | 2,606 |  |  | $ | 1,368 |  |  | $ | 1,190 |
Allowance for credit losses |  |  | (1,107 | ) |  |  | (25 | ) |  |  | (25 | )
Accounts receivable, net |  |  | 1,499 |  |  |  | 1,343 |  |  |  | 1,165 |
Accounts Receivable, Allowance for Credit Loss [Table Text Block] |
|  | As of March 31, |
|  | 2025 |  |  | 2024 |
Opening balance |  | $ | (25 | ) |  | $ | (25 | )
Reserve adjustment |  |  | (1,082 | ) |  |  | - |
Allowance for credit losses |  |  | (1,107 | ) |  |  | (25 | )
Allowance for Sales and Marketing Expenses [Table Text Block] |
Balance at March 31, 2023 |  | $ | 102 |
additions |  |  | 435 |
usages |  |  | (364 | )
adjustments |  |  | (20 | )
Balance at March 31, 2024 |  | $ | 153 |
additions |  |  | 864 |
usages |  |  | (805 | )
adjustments |  |  | (38 | )
Balance at March 31, 2025 |  | $ | 174 |
Schedule of Other Nonoperating Income (Expense) [Table Text Block] |
|  | 2025 |  |  | 2024 |
|  | (In thousands) |
Interest expense |  | $ | (9 | ) |  | $ | (5 | )
Interest income |  |  | 896 |  |  |  | 1,160 |
Interest income, net |  | $ | 887 |  |  | $ | 1,155 |

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