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v3.23.3

Note F - Property, Plant and Equipment (Details Textual) | Sep. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Oct. 31, 2022 USD ($) | May 25, 2021 USD ($) ft² a
--- | --- | --- | --- | ---
Buildings and Improvements, Gross | $ 28,625,000 | $ 28,550,000 |  |
Construction in Progress, Gross | 3,914,000 | $ 1,167,000 |  |
Capital Expenditures, Expected Cost | 4,400,000 |  |  |
Facility in Sinton, Texas [Member] |  |  |  |
Area of Land (Acre) | a |  |  |  | 26.5
Lessee, Operating Lease, Term of Contract (Year) |  |  |  | 99 years
Annual Rental Payment |  |  |  | $ 1
Capitalized Property Plant and Equipment [Member] |  |  |  |
Buildings and Improvements, Gross |  |  | $ 22,200,000 |
Facility in Sinton, Texas [Member] |  |  |  |
Area of Real Estate Property (Square Foot) | ft² |  |  |  | 70,000
Building Expansion Project [Member] |  |  |  |
Construction in Progress, Gross | 1,200,000 |  |  |
Upgrade of Decatur, AL Processing Line [Member] |  |  |  |
Construction in Progress, Gross | 1,100,000 |  |  |
Repair and Expansion of Storage Yard at Decatur Facility [Member] |  |  |  |
Construction in Progress, Gross | $ 500,000 |  |  |

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- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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