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Stockholders' Equity (Changes in Nonvested Stock Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Number of Options, beginning balance | 1,737 |  |
Weighted-Average Exercise Price Per Share, beginning balance | $ 29.97 |  |
Options granted, Number of options | 694 |  |
Options granted, Weighted-Average Exercise Price Per Share | $ 40.99 |  |
Options vested, Number of options | (698) |  |
Options vested, Weighted-Average Exercise Price Per Share | $ 28.97 |  |
Options forfeited, Number of options | (54) |  |
Options forfeited, Weighted-Average Exercise Price Per Share | $ 33.40 |  |
Number of Options, ending balance | 1,679 |  |
Weighted-Average Exercise Price Per Share, ending balance | $ 34.83 |  |
Stock Options [Member] |  |  |
Options granted, Weighted-Average Exercise Price Per Share | $ 15.63 | $ 15.84 | $ 12.14

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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