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Note 2 - Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Dec. 31, 2024
Notes Tables |
Cash, Cash Equivalents and Investments [Table Text Block] |
|  | December 31, |  |  | March 31, |
|  | 2024 |  |  | 2024 |
Total cash and cash equivalents |  | $ | 572 |  |  | $ | 1,445 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | December 31, |  |  | March 31, |
|  | 2024 |  |  | 2024 |
Accounts receivable, gross |  | $ | 5,927 |  |  | $ | 6,099 |
Less: Allowance for credit losses |  |  | (101 | ) |  |  | (76 | )
Accounts receivable, net |  | $ | 5,826 |  |  | $ | 6,023 |

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