Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Cliff Vesting Period

+ References

No definition available.

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- Definition

Share Based Compensation Arrangements By Share Based Payment Award Option Expiration Period

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)

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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1)

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

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1)

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

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)

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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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Stock-based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant under the 2007 Plan (shares)	1,523,000		1,523,000
Vesting period			4 years
1995 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage discount from fair market value for shares purchased under the Employee Stock Purchase Plan			85.00%
Offering period (years)			6 months
Shares available for future issuance under the Employee Stock Purchase Plan (shares)	0		0
Prior to October 1 2005
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option expiration period (years)			10 years
After October 1 2005
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option expiration period (years)			7 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Cliff vesting period			6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Cliff vesting period			1 year
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants	$ 16.18	$ 11.26	$ 13.55	$ 11.17
Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			2 years
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
SARS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Option expiration period (years)			7 years
Total unrecognized stock-based compensation expense	$ 7.4		$ 7.4
Nonvested awards, total compensation cost not yet recognized, period for recognition (years)			3 years 1 month 17 days
SARS \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Cliff vesting period			6 months
SARS \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Cliff vesting period			1 year
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized stock-based compensation expense	$ 8.9		$ 8.9
Nonvested awards, total compensation cost not yet recognized, period for recognition (years)			2 years 4 months 13 days