Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consist of the following components (dollars in thousands):

	March 31, 2019		December 31, 2018
Finished goods	$	91,180	$	91,780
Work in process	30,300		29,080
Raw materials	57,690		52,260
Total inventories	$	179,170	$	173,120