Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Summary of Inventories

Year Ended December 31,	2020		2019
(Dollars in thousands)
Raw materials	$	46,712	$	44,245
Work in process		45,394		40,344
Finished goods		62,874		83,881
Inventories, net	$	154,980	$	168,470