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v3.23.2

Note 5 - Leases (Details Textual) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2019 | Mar. 31, 2023
Finance Lease, Liability, to be Paid |  | $ 163,000
Operating Lease, Weighted Average Remaining Lease Term (Year) |  | 19 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term (Year) |  | 1 year 6 months
Operating Lease, Weighted Average Discount Rate, Percent |  | 2.70%
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, to be Paid | $ 500,000 |
Finance Lease, Monthly Payment | $ 9,000 |
Granite City, IL Facility [Member] |  |
Operating Lease, Quarterly Payments |  | $ 19,000
Granite City, IL Facility [Member] | Plateplus Inc. [Member] |  |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability |  | 1,200,000
Office Space in Longview, Texas [Member] |  |
Operating Lease, Monthly Payments |  | $ 5,000

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