Property, Plant, and Equipment, net (Tables)

9 Months Ended

Jun. 30, 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)	June 30, 2018			September 30, 2017
Equipment	$	35,590		$	31,507
Furniture and fixtures	1,109			1,109
Computer hardware and software	2,908			2,974
Leasehold improvements	1,908			2,330
Construction in progress	3,335			4,539
Property, plant, and equipment, gross	$	44,850		42,459
Accumulated depreciation	(27,273		)	(25,824		)
Property, plant, and equipment, net	$	17,577		$	16,635