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Supplementary Cash Flow Information (Tables)
6 Months Ended
Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]  
Schedule of Net Changes in Non-Cash Working Capital The net changes in non-cash working capital items are as follows:
For the six months ended June 30,
20202019
Accounts receivable$1,161  $(3,986) 
Other receivables(2,336) (7,681) 
Prepaids and other assets1,568  (2,564) 
Inventory(23,913) (15,105) 
Accounts payable and other liabilities(6,985) 9,877  
Cumulative effect from foreign exchange(65) (2,132) 
Total$(30,570) $(21,591)