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Stockholders' Equity (Activity for Stock Option Awards) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Stock-Based Compensation
Number of options, beginning balance	4,556
Weighted Average Exercise Price Per Share, beginning balance	$ 21.79
Options granted, Number of options	693
Options granted, Weighted Average Exercise Price Per Share	$ 33.72
Options exercised, Number of options	(796)
Options exercised, Weighted Average Exercise Price Per Share	$ 13.71
Options forfeited, Number of options	(30)
Options forfeited, Weighted Average Exercise Price Per Share	$ 29.11
Number of options, ending balance	4,423
Weighted Average Exercise Price Per Share, ending balance	$ 25.06

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ 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)(iv)(3)

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

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Gross number of share options (or share units) granted during the period.

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No definition available.

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Number of options outstanding, including both vested and non-vested options.

+ References

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-Name Accounting Standards Codification

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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