Property, Plant, and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Net book value, equipment no longer to be utilized		$ 600		$ 600
Proceeds from disposal of property, plant and equipment			$ 77	0	$ 100
Impairments of equipment	$ 0	$ 468	$ 0	$ 468