Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Summary of Inventories

	March 31, 2021		December 31, 2020
(Dollars in thousands)
Raw materials	$	45,093	$	46,712
Work in process		53,728		45,394
Finished goods		65,874		62,874
Inventories, net	$	164,695	$	154,980