Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Composition of Inventories

The composition of inventories at June 30, 2018, and December 31, 2017, was as follows: 

(In thousands)	June 30, 2018		December 31, 2017
Finished goods	$	124,959	$	117,529
Raw materials		63,502		55,219
Total inventories	$	188,461	$	172,748