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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details)
3 Months Ended 9 Months Ended
Aug. 31, 2018
customers
Nov. 30, 2017
customers
Aug. 31, 2018
customers
Aug. 31, 2017
Aug. 31, 2018
customers
Aug. 31, 2017
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]            
Concentration Risk [Line Items]            
Number of Customers Exceeded 10 percent of Total Consolidated Accounts Receivable 1   1   1  
Accounts receivable [Member] | Customer Concentration Risk [Member]            
Concentration Risk [Line Items]            
Number of Customers Exceeded 10 percent of Total Consolidated Accounts Receivable 1 1 1   1  
Top Customer [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]            
Concentration Risk [Line Items]            
Concentration risk, percentage     16.00% 22.00% 17.00% 20.00%
Top Customer [Member] | Accounts receivable [Member]            
Concentration Risk [Line Items]            
Concentration risk, percentage 17.00% 12.00%        
HP Inc [Member] | Sales Revenue, Net [Member] | Supplier Concentration Risk [Member]            
Concentration Risk [Line Items]            
Concentration risk, percentage     13.00% 14.00% 13.00% 14.00%