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Inventories

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories at September 30, 2018 and December 31, 2017 consisted of the following:



(in thousands)	September 30, 2018				December 31, 2017
Raw material	$	1,867			$	2,148
Work-in-process	4,715				6,585
Finished goods	10,400				14,647
Supplies	1,325				729
Total inventories	$	18,307			$	24,109