Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Nature of Business and Significant Accounting Policies (Details) - Property, Plant and Equipment

v3.19.3
Note 1 - Nature of Business and Significant Accounting Policies (Details) - Property, Plant and Equipment
3 Months Ended
Aug. 31, 2019
Property, Plant and Equipment [Line Items]  
Estimated Useful Life Term of lease
Minimum [Member] | Office Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 3 years
Minimum [Member] | Furniture and Fixtures [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 3 years
Minimum [Member] | Machinery and Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 3 years
Maximum [Member] | Office Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 5 years
Maximum [Member] | Furniture and Fixtures [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 7 years
Maximum [Member] | Machinery and Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 10 years