Derivative Instruments and Hedging Activities (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Derivatives Not Designated as Hedging Instruments
Total derivatives not designated as hedging instruments, Asset	$ 98	$ 4
Total derivatives not designated as hedging instruments, Liability	248	132
Accrued liabilities
Credit-risk-related Contingent Features
Foreign Exchange Contracts, Liability	248	132
Prepaid expenses
Derivatives Not Designated as Hedging Instruments
Foreign Exchange Contracts, Asset	$ 98	$ 4

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant