Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

As of September 30, 2019 and December 31, 2018, Inventories consisted of the following:

(in thousands)	September 30, 2019	December 31, 2018
Raw materials	$54,376	$40,489
Work in process	34,614	33,181
Finished goods	16,715	12,234
Total inventories	$105,705	$85,904