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Inventories

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following (in thousands):



	December 31,
	2018				2017
Raw materials	$	2,774			$	3,542
Work in process	28,864				15,692
Finished goods	21,318				24,011
Total inventories	$	52,956			$	43,245