Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are valued at the lower of cost or market. Inventories were as follows at the end of the periods noted below:

(Dollars in thousands)	June 30, 2018		December 31, 2017
Raw materials	$	51,370	$	43,092
Work-in-process	29,150		28,133
Finished goods	37,219		41,332
Total inventories	$	117,739	$	112,557