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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2024
Notes Tables |
Schedule of Cash and Cash Equivalents [Table Text Block] |
|  | As of: |
|  | March 31, |  |  | March 31, |
|  | 2024 |  |  | 2023 |
Cash and cash equivalents |  | $ | 4,483 |  |  | $ | 5,236 |
Restricted cash |  |  | 7,370 |  |  |  | 7,020 |
Total cash, cash equivalents and restricted cash |  | $ | 11,853 |  |  | $ | 12,256 |
Property, Plant and Equipment, Useful Life [Table Text Block] |
|  | Years
Buildings and improvements |  |  | 30 |
Land improvements |  | 10 | - | 20
Machinery and equipment |  | 5 | - | 15
Office equipment and furniture |  | 3 | - | 5
Vehicles |  | 3 | - | 5
Computer software |  | 3 | - | 5

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