Inventory (Tables)

9 Months Ended

Sep. 30, 2020

Inventory [Abstract]

Components Of Inventory

	September 30, 2020		December 31, 2019
Finished goods	$	42,180	$	45,127
Raw materials		15,633		16,130
Work-in-process		6,329		9,360
Supplies and consumables		33,723		33,322
Total	$	97,865	$	103,939