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Supplementary cash flow information
12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Supplementary cash flow information
20. Supplementary cash flow information

 

    

December 31, 2017

$

    

December 31, 2016

$

 

Changes in non-cash working capital

     

Accounts receivable and other

     (2,456)        17,168  

Inventories

     (31,437)        (18,264)  

Accounts payable and accrued liabilities

     (1,862)        33,391  

Total

     (35,755)        32,295  

Supplementary cash flow information

     

Income taxes paid

     42,293        48,653  

Interest paid

     36,750        37,114