Share-Based Payments (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
Jun. 30, 2013
Options Outstanding
Range of Exercise Prices, Number Outstanding (in shares)	11,143
Range of Exercise Prices, Weighted Average Remaining Contractual Term	6 years 4 months 24 days
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 12.66
Options Exercisable
Range of Exercise Prices, Number Exercisable (in shares)	6,137
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 9.24
Range of Exercise Prices $2.00 - 9.66
Information about stock options under option plans
Lower Range of Exercise Prices (in dollars per share)	$ 2.00
Upper Range of Exercise Prices (in dollars per share)	$ 9.66
Options Outstanding
Range of Exercise Prices, Number Outstanding (in shares)	5,439
Range of Exercise Prices, Weighted Average Remaining Contractual Term	4 years 8 months 12 days
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 7.92
Options Exercisable
Range of Exercise Prices, Number Exercisable (in shares)	4,782
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 7.98
Range of Exercise Prices $11.39 - 23.49
Information about stock options under option plans
Lower Range of Exercise Prices (in dollars per share)	$ 11.39
Upper Range of Exercise Prices (in dollars per share)	$ 23.49
Options Outstanding
Range of Exercise Prices, Number Outstanding (in shares)	5,704
Range of Exercise Prices, Weighted Average Remaining Contractual Term	7 years 10 months 24 days
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 17.17
Options Exercisable
Range of Exercise Prices, Number Exercisable (in shares)	1,355
Range of Exercise Prices, Weighted Average Exercise Price (in dollars per share)	$ 13.69

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-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 718

-SubTopic 10

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-Paragraph 2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Subparagraph b(1)(a, b)

-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.

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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