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Geographic Information (Details) - USD ($)	9 Months Ended
	Feb. 28, 2019	May 31, 2018
Geographic Information (Details) [Line Items]
Property, Plant and Equipment, Net	$ 345,978	$ 351,149
Geographic Concentration Risk [Member]
Geographic Information (Details) [Line Items]
Concentration Risk, Percentage	10.00%
MEXICO
Geographic Information (Details) [Line Items]
Inventory, Gross	$ 623,000	657,000
Property, Plant and Equipment, Net	$ 39,000	$ 41,000

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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.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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