Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories are comprised of the following amounts:

	September 30, 2019		December 31, 2018
Raw materials	$	52,776	$	52,930
Work in process	46,548		42,578
Finished goods	27,508		27,107
Total inventories	$	126,832	$	122,615