Property, Plant, and Equipment, net (Tables)

12 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Plant and equipment are depreciated on a straight-line basis over the following estimated useful lives of the assets: 

Description	Estimated Useful Life
Building	twenty years
Equipment	three to ten years
Furniture and fixtures	five years
Computer hardware and software	five to seven years
Leasehold improvements	three to six years

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

	As of
(in thousands)	September 30, 2019			September 30, 2018
Land	$	3,484		$	—
Building and improvements	9,405			—
Equipment	42,308			36,625
Furniture and fixtures	1,109			1,109
Computer hardware and software	3,554			2,928
Leasehold improvements	2,676			2,049
Construction in progress	9,330			3,648
Property, plant, and equipment, gross	$	71,866		$	46,359
Accumulated depreciation	(34,643		)	(28,143		)
Property, plant, and equipment, net	$	37,223		$	18,216