Derivative Instruments and Hedging Activities (Narrative) (Details) In Thousands	9 Months Ended	3 Months Ended
Jun. 30, 2011 USD ($)	Dec. 31, 2010 Derivatives in Foreign Currency Relationships [Member] USD ($)	Sep. 30, 2010 Derivatives in Foreign Currency Relationships [Member] USD ($)	Sep. 30, 2010 Derivatives in Foreign Currency Relationships [Member] EUR (€)
Foreign currency exchange rate contract			$ 52,549	€ 39,000
Gain on the fair market value of foreign currency exchange rate contract			579
Realized loss on settlement of forward contract		1,033
Net unrecognized losses on terminated derivative instruments expected to be reclassified to earnings	$ 188
Expected period to reclassify unrecognized losses on terminated derivatives from accumulated other comprehensive earnings to earnings, in months	twelve

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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- Definition

The time period estimated for the anticipated transfer of gains (losses), net from accumulated other comprehensive income into earnings.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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=6935481&loc=SL5624163-113959

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- Definition

Aggregate notional amount of foreign currency derivatives to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

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- Definition

Amount of gain (loss) recognized in earnings in the period from the settlement of derivative instruments.

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