Concentrations, Risks and Uncertainties	9 Months Ended
Feb. 28, 2017
Risks and Uncertainties [Abstract]
Concentrations, Risks and Uncertainties	Note 8. Concentrations, Risks and Uncertainties Greystone derived approximately 67% of its total sales from two customers (21% and 46% respectively) in fiscal year 2017 and approximately 41% (31% and 10%, respectively) in fiscal year 2016. The loss of a material amount of business from 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 $1,202,381 and $1,216,492 in fiscal years 2017 and 2016, 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 February 28, 2017, Greystone is indebted to Mr. Rosene in the amount of $4,498,383 for a note payable due January 15, 2019. There is no assurance that Mr. Rosene will renew the note as of the maturity date.

Concentrations, Risks and Uncertainties

9 Months Ended

Feb. 28, 2017

Note 8. Concentrations, Risks and Uncertainties

Greystone derived approximately 67% of its total sales from two customers (21% and 46% respectively) in fiscal year 2017 and approximately 41% (31% and 10%, respectively) in fiscal year 2016. The loss of a material amount of business from 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 $1,202,381 and $1,216,492 in fiscal years 2017 and 2016, 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 February 28, 2017, Greystone is indebted to Mr. Rosene in the amount of $4,498,383 for a note payable due January 15, 2019. There is no assurance that Mr. Rosene will renew the note as of the maturity date.