Inventory (Tables)

9 Months Ended

Sep. 30, 2019

Inventory [Abstract]

Components Of Inventory

	September 30, 2019		December 31, 2018
Finished goods	$	62,301	$	54,144
Raw materials		16,758		16,795
Work-in-process		9,504		5,544
Supplies and consumables		34,957		30,822
Total	$	123,520	$	107,305