Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories were as follows (in thousands):

	September 30, 2018		December 31, 2017
Raw materials	$	34,328	$	27,400
Work-in-process		3,864		3,596
Finished goods		5,252		5,503
Net balance	$	43,444	$	36,499