Inventories

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are comprised of the following: 

	As of December 31, 2015		As of June 30, 2016
	(Dollars in thousands)
Inventories:
Raw materials and supplies	$	66,201	$	60,080
Work in process	89,198		65,055
Finished goods	62,731		62,105
Total	$	218,130	$	187,240

Due to decreased pricing in our graphite electrode product line, we recorded a lower of cost or market inventory adjustment of $3.5 million and $14.6 million in the three and six months endedJune 30, 2016, respectively.