Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment by type were as follows:

(in thousands)	As of December 31,
Property, Plant and Equipment	2020		2019
Leasehold improvements	$	6,725	$	6,745
Machinery and equipment	43,030		41,243
Construction in progress	1,670		1,679
Total property, plant and equipment, at cost	51,425		49,667
Accumulated depreciation	(31,244)		(26,473)
Property, plant and equipment, net	$	20,181	$	23,194