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Note E - Leases (Details Textual) - USD ($)	1 Months Ended	3 Months Ended
	Oct. 31, 2019	Jun. 30, 2022
Finance Lease, Liability, Payment, Due, Total		$ 245,007
Operating Lease, Weighted Average Remaining Lease Term (Year)		19 years 8 months 12 days
Finance Lease, Weighted Average Remaining Lease Term (Year)		2 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent		2.80%
Finance Lease, Weighted Average Discount Rate, Percent		1.90%
Heavy-duty Forklift [Member]
Lessee, Finance Lease, Term of Contract (Year)	5 years
Finance Lease, Liability, Payment, Due, Total	$ 518,616
Finance Lease, Monthly Payment	$ 9,074
Plateplus Inc. [Member]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 1,237,097
Granite City, IL Facility [Member]
Lessee, Operating Lease, Renewal Term (Year)		20 years
Operating Lease, Quarterly Payments		$ 18,832
Granite City, IL Facility [Member] | Plateplus Inc. [Member]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		1,237,097
Office Space in Longview, Texas [Member]
Operating Lease, Monthly Payments		$ 4,878

X

- Definition

Represents the amount of monthly payment for finance lease.

+ References

No definition available.

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- Definition

Amount of monthly payments related to operating lease.

+ References

No definition available.

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- Definition

Amount paid on a quarterly basis related to operating leases.

+ References

No definition available.

+ Details

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X

- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(4)
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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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- Definition

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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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