Inventories

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are valued at the lower of cost (principally standard cost, which approximates actual cost on a first in, first out basis) or net realizable value.

Inventories consisted of the following (in thousands):

	September 30, 2017		December 31, 2016
Raw materials	$	32,378	$	27,402
Work-in-progress	22,474		20,390
Finished goods	13,815		12,014
	$	68,667	$	59,806