Intangible Assets (Tables)  | 
3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Feb. 28, 2018  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of intangible assets | Intangible assets consist of owned trademarks and patents for ten product lines.
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- References No definition available. 
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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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