Refers to the number of restricted stock units for which performance targets established.

No definition available.

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This line item represents the number of shares of common stock which are exchanged upon the vesting of the restricted stock unit awards.

+ References

No definition available.

+ Details

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- Definition

Number of stock option awards subject to the achievement of pre-tax income performance targets established by the Compensation Committee.

+ References

No definition available.

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- Definition

Number of unvested stock option awards that will vest subject to the satisfaction of service-based requirements.

+ References

No definition available.

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- Definition

Number of unvested stock option awards that will vest subject to the satisfaction of service-based requirements and the achievement of performance metrics.

+ References

No definition available.

+ Details

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- Definition

Represents the total number of awards approved to date by the Compensation Committee of the Company's Board of Directors.

+ References

No definition available.

+ Details

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- Definition

Number of options which are granted and outstanding before approved for grant as of the date of balance sheet.

+ References

No definition available.

+ Details

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- Definition

Number of unvested stock option awards will vest based on the satisfaction of both service requirements and the achievement of performance metrics.

+ References

No definition available.

+ Details

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- Definition

Number of unvested stock option awards will vest based on the satisfaction of service requirements.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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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

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ 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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- 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

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 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)

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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.

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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 number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the 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)(iii)

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

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under 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)(iii)

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

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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

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

+ Details

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- Definition

Period from grant date that an equity-based award expires, 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)(2)

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

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

+ References

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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restricted Stock Units [Member]
Share-Based Compensation [Line Items]
Number of shares of common stock exchanged for each award			1
Aggregate number of shares approved	6,276,430		6,276,430
Weighted average grant date fair value			$ 23.07
Forfeited			1,560
Compensation expense	$ 3.0	$ 3.2	$ 8.6	$ 7.0
Unrecognized compensation cost related to the unvested awards	$ 15.8		$ 15.8
Weighted average period over which unrecognized compensation cost is expected to be recognized			1 year 7 months 6 days
Number of unvested stock awards that will vest subject to the satisfaction of service-based requirements and the achievement of performance metrics			35,000
Number of unvested stock awards that will vest subject to the satisfaction of service-based requirements			1,685,097
Granted, Weighted average grant date fair value			$ 23.07	$ 27.33
Restricted Stock Units [Member] \| Awarded in 2015, 2013, and 2012 [Member]
Share-Based Compensation [Line Items]
Number of restricted stock units for which performance targets are established			321,500
Restricted Stock Units [Member] \| Awarded in 2014, 2013 and 2012 [Member]
Share-Based Compensation [Line Items]
Number of restricted stock units for which performance targets are established				866,500
Stock Options [Member]
Share-Based Compensation [Line Items]
Aggregate number of shares approved	3,385,465		3,385,465
Weighted average grant date fair value			$ 12.48
Compensation expense	$ 1.1	$ 1.3	$ 4.7	$ 2.9
Unrecognized compensation cost related to the unvested awards	$ 5.1		$ 5.1
Weighted average period over which unrecognized compensation cost is expected to be recognized			1 year 2 months 12 days
Term of stock options			10 years
Granted, Weighted average grant date fair value			$ 12.48	$ 17.69
Number of vested and exercisable stock options	1,485,000		1,485,000
Vested and exercisable stock options, weighted average exercise price	$ 19.57		$ 19.57
Number of unvested stock option awards that will vest subject to the satisfaction of service-based requirements	15,000		15,000
Number of unvested stock option awards that will vest subject to the satisfaction of service-based requirements and the achievement of performance metrics	1,425,000		1,425,000
Outstanding shares	2,248,000		2,248,000
Intrinsic value of outstanding stock options	$ 8.4		$ 8.4
Weighted average remaining contractual term of outstanding stock options			5 years 8 months 12 days
Granted	0		259,000
Stock Options [Member] \| Awarded in 2014, 2013 and 2012 [Member]
Share-Based Compensation [Line Items]
Number of stock option awards subject to performance targets				714,000
Stock Options [Member] \| Awarded in 2015, 2014, 2013, And 2012 [Member]
Share-Based Compensation [Line Items]
Number of stock option awards subject to performance targets			259,000
Plan [Member]
Share-Based Compensation [Line Items]
Number of shares authorized for grant	8,500,000		8,500,000
Number of shares available for future grant	46,768		46,768