Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

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

	September 30, 2018		December 31, 2017
Finished goods	$	85,730	$	86,310
Work in process	27,300		24,580
Raw materials	52,440		44,460
Total inventories	$	165,470	$	155,350