Inventories

6 Months Ended

Jun. 30, 2016

Inventories [Abstract]

Inventories

3.Inventories

Inventories consisted of the following:

	June 30,		December 31,
(in thousands)	2016		2015
Raw materials and supplies	$	27,875	$	23,099
Work-in-process		41,281		37,209
Finished goods		27,518		16,628
Total inventories	$	96,674	$	76,936