Basis of Presentation - Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 628	$ 1,454
Warranty expenditures	(530)	(663)
Warranty provisions/(adjustment)	925	(25)
Ending balance	$ 1,023	$ 766
Minimum
Product Warranty [Line Items]
Standard product warranty, period (in months)	12 months
Maximum
Product Warranty [Line Items]
Standard product warranty, period (in months)	24 months