Purchased Intangible Assets (Schedule of Current Finite-Lived Intangible Asset Amortization Expense by Income Statement Line Item) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	$ 398	$ 498	$ 1,191	$ 1,449
Cost of sales
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	222	267	647	755
Operating expenses
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	$ 176	$ 231	$ 544	$ 694