Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventories

Schedule of inventories

	As of June 30,		As of December 31,
(in thousands)	2020		2019
Raw materials	$	19,684	$	20,574
Work in process		13,887		10,165
Finished goods		31,581		37,465
Total inventories	$	65,152	$	68,204