Gross Fair Value of all Derivative Instruments (Details) (Foreign Currency Forward Contract, Prepaid Expenses and Other Current Assets, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Foreign Currency Forward Contract \| Prepaid Expenses and Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Assets	$ 641	$ 795

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

Reference 1: 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

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant