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Note 2 - Summary of Significant Accounting Policies - Property Plant and Equipment Useful Life (Details) | 12 Months Ended
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Mar. 31, 2022
Machinery and Equipment [Member] | Minimum [Member] |
Property, plant and equipment, useful life (Year) | 3 years
Machinery and Equipment [Member] | Maximum [Member] |
Property, plant and equipment, useful life (Year) | 10 years
Furniture and Fixtures [Member] | Minimum [Member] |
Property, plant and equipment, useful life (Year) | 3 years
Furniture and Fixtures [Member] | Maximum [Member] |
Property, plant and equipment, useful life (Year) | 5 years
Leasehold Improvements [Member] |
Property, plant and equipment, estimated useful life | Shorter of the estimated useful life or the remaining lease term

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126905813&loc=d3e1205-110223 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Details
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- Details
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Period Type: |

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- Details
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- Details
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- Details
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Balance Type: |
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