Inventories (Tables)

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventories

At December 31, 2015 and 2014, inventories (in thousands) consisted of the following:

	At December 31,
	2015		2014
Supplies	$	18,029	$	17,528
Raw materials and work in process	18,113		12,562
Finished goods	28,862		36,622
Total inventories	$	65,004	$	66,712