Concentrations, Risks and Uncertainties	6 Months Ended
Nov. 30, 2019
Risks and Uncertainties [Abstract]
Concentrations, Risks and Uncertainties	Note 11. Concentrations, Risks and Uncertainties Greystone derived approximately 88% and 84% of its total sales from four customers (three in fiscal year 2019) in fiscal years 2020 and 2019, respectively. 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 $1,019,279 and $814,764 in fiscal years 2020 and 2019, respectively, is from one of its major customers. Robert B. Rosene, Jr., a Greystone director, has provided financing and guarantees on Greystone’s bank debt. As of November 30, 2019, Greystone is indebted to Mr. Rosene in the amount of $4,340,285 for a note payable due January 15, 2021. There is no assurance that Mr. Rosene will renew the note as of the maturity date.

Concentrations, Risks and Uncertainties

6 Months Ended

Nov. 30, 2019

Note 11. Concentrations, Risks and Uncertainties

Greystone derived approximately 88% and 84% of its total sales from four customers (three in fiscal year 2019) in fiscal years 2020 and 2019, respectively. 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 $1,019,279 and $814,764 in fiscal years 2020 and 2019, respectively, is from one of its major customers.

Robert B. Rosene, Jr., a Greystone director, has provided financing and guarantees on Greystone’s bank debt. As of November 30, 2019, Greystone is indebted to Mr. Rosene in the amount of $4,340,285 for a note payable due January 15, 2021. There is no assurance that Mr. Rosene will renew the note as of the maturity date.