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		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	$ 409	$ 392	$ 818	$ 793
Cost of sales
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	233	215	465	425
Operating expenses
Schedule of Current Intangible Asset Amortization Expense By Income Statement Line Item [Line Items]
Amortization of intangibles	$ 176	$ 177	$ 353	$ 368