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Note 16 - Plant Restructuring (Tables) | 12 Months Ended
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Mar. 31, 2023
Notes Tables |
Restructuring and Related Costs [Table Text Block] |
|  | Severance |  |  | Other |  |  |  |  |
|  | Payable |  |  | Costs |  |  | Total |
Balance March 31, 2020 |  | $ | 202 |  |  | $ | - |  |  |  | 202 |
Charge to expense |  |  | 227 |  |  |  | (45 | ) |  |  | 182 |
Cash payments/write offs |  |  | (429 | ) |  |  | 45 |  |  |  | (384 | )
Balance March 31, 2021 |  |  | - |  |  |  | - |  |  |  | - |
Charge to expense |  |  | - |  |  |  | 70 |  |  |  | 70 |
Cash payments/write offs |  |  | - |  |  |  | (70 | ) |  |  | (70 | )
Balance March 31, 2022 |  |  | - |  |  |  | - |  |  |  | - |
Charge to expense |  |  | 361 |  |  |  | 3,189 |  |  |  | 3,550 |
Cash payments/write offs |  |  | (244 | ) |  |  | (3,189 | ) |  |  | (3,433 | )
Balance March 31, 2023 |  | $ | 117 |  |  | $ | - |  |  | $ | 117 |

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