Accrued Expenses and Other Current Liabilities (Schedule of Product Warranty Accruals) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 1,664	$ 2,816
Provision for product warranty - expense	146	402
Adjustments and utilization of warranty accrual	(246)	(783)
Balance at end of period	1,564	2,435
Current portion	1,564	1,904	$ 1,664
Non-current portion	$ 0	$ 531