Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

The following table sets forth the components of inventory:

	December 31,
(In thousands)	2017			2016
Finished products	$	66,064		$	54,348
Work in process	10,141			6,542
Raw materials and supplies	117,388			84,069
Inventories at current cost	193,593			144,959
Less: LIFO valuation	(39,854		)	(41,893		)
Total inventories	$	153,739		$	103,066