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v3.22.1

Note 1 - Summary of Significant Accounting Policies - Estimated Useful Lives (Details) | 12 Months Ended
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Mar. 31, 2022
Land Improvements [Member] | Minimum [Member] |
Useful Life (Year) | 10 years
Land Improvements [Member] | Maximum [Member] |
Useful Life (Year) | 20 years
Building and Building Improvements [Member] |
Useful Life (Year) | 30 years
Machinery and Equipment [Member] | Minimum [Member] |
Useful Life (Year) | 10 years
Machinery and Equipment [Member] | Maximum [Member] |
Useful Life (Year) | 15 years
Furniture and Fixtures [Member] | Minimum [Member] |
Useful Life (Year) | 3 years
Furniture and Fixtures [Member] | Maximum [Member] |
Useful Life (Year) | 5 years
Vehicles [Member] | Minimum [Member] |
Useful Life (Year) | 3 years
Vehicles [Member] | Maximum [Member] |
Useful Life (Year) | 7 years
Software and Software Development Costs [Member] | Minimum [Member] |
Useful Life (Year) | 3 years
Software and Software Development Costs [Member] | Maximum [Member] |
Useful Life (Year) | 5 years

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |