Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:

(Dollars in thousands)	March 31, 2019		December 31, 2018
Raw materials	$	64,382	$	59,321
Work-in-process	30,602		30,086
Finished goods	38,258		43,230
Total inventories	$	133,242	$	132,637