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Stock-Based Compensation (Exercise Price Range) (Details) - Stock Options shares in Thousands | 12 Months Ended
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Sep. 30, 2017 $ / shares shares
$7.40 - $8.30 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 7.40
Exercise Price Range, Upper Range | $ 8.30
Options Outstanding | shares | 858
Weighted Average Remaining Contractual Term | 4 years 3 days
Weighted Average Exercise Price, Options Outstanding | $ 7.95
Number of Shares Vested, Options Exercisable | shares | 623
Weighted Average Exercise Price, Options Exercisable | $ 7.92
$8.31 - $9.59 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 8.31
Exercise Price Range, Upper Range | $ 9.59
Options Outstanding | shares | 623
Weighted Average Remaining Contractual Term | 3 years 11 months 23 days
Weighted Average Exercise Price, Options Outstanding | $ 9.14
Number of Shares Vested, Options Exercisable | shares | 551
Weighted Average Exercise Price, Options Exercisable | $ 9.16
$9.60 - $10.52 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 9.60
Exercise Price Range, Upper Range | $ 10.52
Options Outstanding | shares | 554
Weighted Average Remaining Contractual Term | 4 years 7 days
Weighted Average Exercise Price, Options Outstanding | $ 9.86
Number of Shares Vested, Options Exercisable | shares | 405
Weighted Average Exercise Price, Options Exercisable | $ 9.84
$10.53 - $10.81 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 10.53
Exercise Price Range, Upper Range | $ 10.81
Options Outstanding | shares | 567
Weighted Average Remaining Contractual Term | 3 years 10 months 27 days
Weighted Average Exercise Price, Options Outstanding | $ 10.73
Number of Shares Vested, Options Exercisable | shares | 556
Weighted Average Exercise Price, Options Exercisable | $ 10.72
$10.82 - $12.63 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 10.82
Exercise Price Range, Upper Range | $ 12.63
Options Outstanding | shares | 604
Weighted Average Remaining Contractual Term | 4 years 9 months 25 days
Weighted Average Exercise Price, Options Outstanding | $ 12.11
Number of Shares Vested, Options Exercisable | shares | 394
Weighted Average Exercise Price, Options Exercisable | $ 11.96
$12.64 - $14.75 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 12.64
Exercise Price Range, Upper Range | $ 14.75
Options Outstanding | shares | 490
Weighted Average Remaining Contractual Term | 6 years 1 month 2 days
Weighted Average Exercise Price, Options Outstanding | $ 13.53
Number of Shares Vested, Options Exercisable | shares | 11
Weighted Average Exercise Price, Options Exercisable | $ 14.75
$14.76 - $15.23 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 14.76
Exercise Price Range, Upper Range | $ 15.23
Options Outstanding | shares | 206
Weighted Average Remaining Contractual Term | 1 month 27 days
Weighted Average Exercise Price, Options Outstanding | $ 15.23
Number of Shares Vested, Options Exercisable | shares | 206
Weighted Average Exercise Price, Options Exercisable | $ 15.23
$7.40 - $15.23 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | 7.40
Exercise Price Range, Upper Range | $ 15.23
Options Outstanding | shares | 3,902
Weighted Average Remaining Contractual Term | 4 years 2 months 4 days
Weighted Average Exercise Price, Options Outstanding | $ 10.54
Number of Shares Vested, Options Exercisable | shares | 2,746
Weighted Average Exercise Price, Options Exercisable | $ 10.18

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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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=96867065&loc=d3e5070-113901 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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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 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)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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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 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=96867065&loc=d3e5070-113901 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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