INVENTORIES

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

The components of inventories are as follows:

(in thousands)	June 30, 2018		December 31, 2017
Raw materials and supplies	$	49,834	$	54,291
Work in progress	5,971		6,918
Finished goods	11,469		11,708
Total inventories	$	67,274	$	72,917