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v3.26.1

Note 5 - Property, Plant and Equipment (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2026
Notes Tables |
Property, Plant, and Equipment [Table Text Block] |
|  | As of: |
|  | March 31, |  |  | March 31, |
|  | 2026 |  |  | 2025 |
Land and land improvements |  | $ | 54,195 |  |  | $ | 52,339 |
Buildings and improvements |  |  | 243,062 |  |  |  | 238,709 |
Machinery and equipment |  |  | 523,448 |  |  |  | 502,223 |
Office equipment, furniture, vehicles and computer software |  |  | 17,420 |  |  |  | 15,604 |
Construction in progress |  |  | 24,330 |  |  |  | 16,177 |
Property, plant and equipment, cost |  |  | 862,455 |  |  |  | 825,052 |
Less: accumulated depreciation |  |  | (531,175 | ) |  |  | (500,284 | )
Property, plant and equipment, net |  | $ | 331,280 |  |  | $ | 324,768 |

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- Definition Tabular disclosure of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration