Inventories

12 Months Ended

Dec. 31, 2018

Statements [Line Items]

Inventories [text block]

9. Inventories  

		Dec. 31, 2018		Dec. 31, 2017		Jan. 1, 2017
Current
Stockpile	$	5,463	$	13,468	$	9,368
Work in progress		1,762		14,552		9,100
Finished goods		62,546		71,906		54,583
Materials and supplies		48,703		41,756		39,413
		118,474		141,682		112,464
Non-current
Stockpile		14,730		—		—
Materials and supplies		4,746		5,809		4,537
		19,476		5,809		4,537
	$	137,950	$	147,491	$	117,001

The cost of inventories recognized as an expense, including depreciation, and included in cost of sales amounted to $975,354 for the year ended December 31, 2018 (year ended December 31, 2017 - $855,141).