Inventories, net (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Inventories, net

Inventories as of September 30, 2018 and December 31, 2017 consisted of the following:

	September 30, 2018		December 31, 2017
	(Dollars in thousands)
Raw materials	$	105,600	$	98,451
Work-in-process	65,291		62,381
Finished goods	240,175		234,912
Inventories, net	$	411,066	$	395,744