XML 99 R79.htm IDEA: XBRL DOCUMENT v3.6.0.2
Financial instruments and risk management - Trade receivables (Details) - CAD
CAD in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Not past due CAD 34,263 CAD 23,946
Past due 1-30 days 2,956 0
Past due 31-60 days 2,000 0
More than 61 days 55 82
Total 39,274 24,028
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Allowance for doubtful accounts CAD 0 CAD 0
Minimum    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Payment terms 30 days  
Maximum    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Payment terms 60 days