Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Segmented Information (Details Textual)

v3.10.0.1
Note 9 - Segmented Information (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Oct. 01, 2017
Sep. 30, 2018
Oct. 01, 2017
Dec. 31, 2017
Sales Revenue, Net [Member]          
Number of Major Customers 3 2 2 2  
Sales Revenue, Net [Member] | Major Customer1 [Member]          
Concentration Risk, Percentage 12.80% 14.00% 13.50% 12.30%  
Sales Revenue, Net [Member] | Major Customer2 [Member]          
Concentration Risk, Percentage 12.00% 12.80% 10.40% 11.50%  
Sales Revenue, Net [Member] | Major Customer3 [Member]          
Concentration Risk, Percentage 10.90%        
Accounts Receivable [Member]          
Number of Major Customers     3   3
Accounts Receivable [Member] | Major Customer1 [Member]          
Concentration Risk, Percentage     14.70%   14.00%
Accounts Receivable [Member] | Major Customer2 [Member]          
Concentration Risk, Percentage     10.30%   14.00%
Accounts Receivable [Member] | Major Customer3 [Member]          
Concentration Risk, Percentage     10.30%   12.00%