Accrued Expenses and Other Current Liabilities (Schedule of Product Warranty Accruals) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 1,102	$ 1,924	$ 1,664	$ 2,816
Provision for product warranty - expense	68	192	302	707
Adjustments and utilization of warranty accrual	(196)	(393)	(992)	(1,800)
Balance at end of period	$ 974	$ 1,723	$ 974	$ 1,723