Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following at December 31:

(In thousands)	2017		2016
Raw materials	$	233,187	$	155,044
Work in process	10,408		7,509
Finished goods	31,153		26,190
Inventories, net	$	274,748	$	188,743