Property, Plant, and Equipment, net (Tables)

12 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

The components of property, plant, and equipment, net consisted of the following:

	As of September 30,
(in thousands)	2021		2020
Equipment	$	37,985	$	35,218
Furniture and fixtures	1,125		1,125
Computer hardware and software	3,575		3,473
Leasehold improvements	6,663		3,169
Construction in progress	9,247		10,301
Property, plant, and equipment, gross	$	58,595	$	53,286
Accumulated depreciation	(36,051)		(32,234)
Property, plant, and equipment, net	$	22,544	$	21,052