Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Composition of Inventories

F4: Composition of Inventories
	June 30, 2016		December 31, 2015
	(in thousands)
Finished products	$	7,459	$	5,454
Raw materials	11,584		14,557
Supplies and other	7,156		7,069
Inventories	$	26,199	$	27,080