Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories, which are valued at the lower of cost or net realizable value, consisted of the following:

(Dollars in thousands)	June 30, 2020		December 31, 2019
Raw materials	$	59,832	$	61,338
Work-in-process	27,561		30,043
Finished goods	37,354		41,478
Total inventories	$	124,747	$	132,859