Revenue and Revenue Recognition (Tables)

9 Months Ended

Feb. 29, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Sale of Revenues for Customer Categories

Sales to the following categories of customers for the nine months ended February 29(28), 2020 and 2019, respectively, were as follows:

Category	2020			2019
End Users – Major Customers		87	%		85	%
End Users - Other		1	%		1	%
Distributors		12	%		14	%