Note 13 - Subsequent Events	6 Months Ended
Nov. 30, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	Note 13. Subsequent Events Subsequent to the quarter ended November 30,2023, Greystone received insurance proceeds of approximately $227,000 associated with damage to its equipment. As a result, Greystone will record a gain of approximately $155,000 during the quarter ended February 29, 2024.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

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