Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Major Classes of Inventories

The major classes of inventories were as follows: 

	December 31,
	2018			2017
	(In thousands)
Raw materials	$	146,803		$	133,311
Work-in-process	45,939			35,807
Finished goods	152,572			153,377
Gross inventories	345,314			322,495
Excess and obsolete reserves	(28,896		)	(25,269		)
Net inventories	$	316,418		$	297,226