Purchased Intangible Assets and Goodwill (Schedule of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 9,178	$ 9,178	$ 9,463
Addition			3,976
Impairment	0	0	(4,261)
Goodwill, Ending Balance	$ 9,178	$ 9,178	$ 9,178

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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