Revenue and Revenue Recognition - Schedule of Sale of Revenues for Customer Categories (Details)	3 Months Ended
Aug. 31, 2019	Aug. 31, 2018
Major Customers (End Users) [Member]
Concentration Risk [Line Items]
Total	87.00%	84.00%
Distributors [Member]
Concentration Risk [Line Items]
Total	12.00%	14.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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Data Type:	num:percentItemType
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Period Type:	duration