Note 11 - Concentrations, Risks and Uncertainties	9 Months Ended
Feb. 28, 2025
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	Note 11. Concentrations, Risks and Uncertainties Greystone derived approximately 76% and 83% of its total sales during the nine months ended February 28(29), 2025 and 2024, respectively, from a limited number of customers, generally ranging from 2 to 4. The loss of a material amount of business from one or more of these customers could have a material adverse effect on Greystone. Greystone purchases damaged pallets from its customers at a price based on the value of the raw material content in the pallet. A majority of these purchases, totaling $474,234 and $637,906 during the nine months ended February 28(29), 2025 and 2024, respectively, is from one of its major customers.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 275
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/275/tableOfContent

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