Inventories

6 Months Ended

Jun. 30, 2015

Inventories [Abstract]

Inventories

5.Inventories

Inventories consisted of the following:

	June 30,		December 31,
(in thousands)	2015		2014
Raw materials and supplies	$	15,863	$	17,375
Work-in-process		40,864		33,477
Finished goods		27,981		14,822
Total inventories	$	84,708	$	65,674