Inventories, Net (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories, Net

Inventories, net consisted of the following:

	December 31,
	2017			2016
	(In thousands)
Raw materials	$	141,827		$	121,886
Work in process	74,704			55,845
Finished goods	250,364			221,866
	466,895			399,597
Less: customer progress payments	(2,308		)	—
Less: allowance for excess, slow-moving and obsolete inventory	(34,960		)	(34,625		)
Inventories, net	$	429,627		$	364,972