Purchased Intangible Assets (Schedule of Finite-Lived Intangible Assets by Major Class) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Total	$ 6,626
Gross	9,120	9,120
Accumulated Amortization	2,494	894
Total, net	6,626	8,226
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross	5,330	4,930
Accumulated Amortization	1,758	879
Total	3,572	4,051
In-process technology (IPR&D)
Finite-Lived Intangible Assets [Line Items]
Gross		400
Accumulated Amortization		0
Total		400
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	3,340	3,340
Accumulated Amortization	580	9
Total	2,760	3,331
Other
Finite-Lived Intangible Assets [Line Items]
Gross	450	450
Accumulated Amortization	156	6
Total	$ 294	$ 444