Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories as of December 31 were as follows (in thousands):

	2016		2015
Raw materials	$	18,648	$	16,257
Work-in-process		3,361		2,879
Finished goods		5,127		4,306
Net balance	$	27,136	$	23,442