Property, Plant, and Equipment, net (Tables)

6 Months Ended

Mar. 31, 2018

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			As of
(in thousands)	March 31, 2018			September 30, 2017
Equipment	$	35,014		$	31,507
Furniture and fixtures	1,109			1,109
Computer hardware and software	2,910			2,974
Leasehold improvements	1,789			2,330
Construction in progress	1,796			4,539
Property, plant, and equipment, gross	$	42,618		42,459
Accumulated depreciation	(25,890		)	(25,824		)
Property, plant, and equipment, net	$	16,728		$	16,635