Summary of Significant Accounting Policies - Schedule of Useful Life of Property, Plant and Equipment (Details)	12 Months Ended
	May 31, 2019
Plant Buildings [Member]
Estimated useful life of property plant and equipment	39 years
Production Machinery and Equipment [Member] | Minimum [Member]
Estimated useful life of property plant and equipment	5 years
Production Machinery and Equipment [Member] | Maximum [Member]
Estimated useful life of property plant and equipment	12 years
Leasehold Improvements [Member] | Minimum [Member]
Estimated useful life of property plant and equipment	5 years
Leasehold Improvements [Member] | Maximum [Member]
Estimated useful life of property plant and equipment	7 years
Furniture and Fixtures [Member] | Minimum [Member]
Estimated useful life of property plant and equipment	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful life of property plant and equipment	5 years