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Note 16 - Plant Restructuring (Tables) | 12 Months Ended
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Mar. 31, 2020
Notes Tables |
Restructuring and Related Costs [Table Text Block] |
|  |  |  |  |  | Other |  |  |  |  |
|  | Severance |  |  | Cost |  |  |  |  |
|  | Payable |  |  | Payable |  |  | Total |
Balance March 31, 2018 |  | $ | - |  |  | $ | - |  |  | $ | - |
Charge to expense |  |  | 1,508 |  |  |  | 10,149 |  |  |  | 11,657 |
Cash payments/write offs |  |  | (1,283 | ) |  |  | (10,148 | ) |  |  | (11,431 | )
Balance March 31, 2019 |  |  | 225 |  |  |  | 1 |  |  |  | 226 |
Charge to expense |  |  | 1,229 |  |  |  | 5,817 |  |  |  | 7,046 |
Cash payments/write offs |  |  | (1,252 | ) |  |  | (5,818 | ) |  |  | (7,070 | )
Balance March 31, 2020 |  | $ | 202 |  |  | $ | - |  |  | $ | 202 |

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