Accrued Expenses and Other Current Liabilities (Schedule of Product Warranty Accruals) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Schedule of Product Warranty Accruals [Abstract]
Balance at beginning of period	$ 4,561	$ 3,692
Provision for product warranty - expense	265	629
Adjustments and utilization of warranty accrual	(411)	(149)
Current portion	3,884	3,764	4,030
Non-current portion	531	408
Balance at end of period	$ 4,415	$ 4,172