Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares in Year Three

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares in Year Two

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Excluded from Shares Outstanding, Number

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Options Outstanding Shares Above Entities Stock Price

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Options Vested in Period Total Fair Value

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, Purchase price of common stock

+ References

No definition available.

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- Definition

Share based Compensation, weighted percentage assigned to achieving market targets

+ References

No definition available.

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- Definition

Share based Compensation, weighted percentage assigned to achieving performance targets

+ References

No definition available.

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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

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ 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)(3)

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- Definition

The number of grants made 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

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-Name Accounting Standards Codification

-Topic 718

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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).

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(2)

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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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).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (a)(3)

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (c)(1)(iv)(4)

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- Definition

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

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Subparagraph (c)(1)(iv)(1)

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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.

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-Name Accounting Standards Codification

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- Definition

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

+ References

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- Definition

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

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-Name Accounting Standards Codification

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Name Accounting Standards Codification

-Topic 718

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-Paragraph 2

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- Definition

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

+ References

No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Regulation S-X (SX)

-Number 210

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Stock-Based Compensation Plans (Details) (USD $)	12 Months Ended
Stock-Based Compensation Plans (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 01, 2015	Feb. 28, 2014	Feb. 26, 2015
Achieves a specified improvement in total shareholder return at the end of 2016 compared to 2011 and she remains an employee [Member] \| Common Stock [Member] \| Chairman, President, and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	135,000
Achieves a specified improvement in total shareholder return at the end of 2014 compared to 2011 and she remains an employee [Member] \| Common Stock [Member] \| Chairman, President, and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	35,000
Subsequent Event [Member] \| Achieved performance target for 2015 and 2016 [Member] \| Common Stock [Member] \| Executive Vice President and Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based compensation arrangement by share-based payment award, Purchase price of common stock				$ 100,000
Subsequent Event [Member] \| Achieved performance target for 2015, 2016 and 2017 [Member] \| Common Stock [Member] \| Executive Vice President and Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based compensation arrangement by share-based payment award, Purchase price of common stock				275,000
Performance Shares [Member] \| Executive [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Excluded from Shares Outstanding, Number	179,845	112,864
Share based Compensation, weighted percentage assigned to achieving market targets					60.00%
Share based Compensation, weighted percentage assigned to achieving performance targets					40.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares in 2013	179,811
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares in 2014	163,152
Performance Shares [Member] \| Subsequent Event [Member] \| Executive [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share based Compensation, weighted percentage assigned to achieving market targets						60.00%
Share based Compensation, weighted percentage assigned to achieving performance targets						40.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Restricted Stock, at Beginning of period, Shares	315,305
Restricted Stock, at Beginning of period, Weighted-Average Grant-Date Fair Value, in dollars per share	$ 17.87
Restricted Stock, Granted, Shares	242,164
Restricted Stock, Granted, Fair Value, in dollars per share	$ 21.27	$ 20.03	$ 16.75
Restricted Stock, Vested, Shares	(295,423)
Restricted Stock, Vested, Weighted-Average Grant-Date Fair Value, in dollars per share	$ 16.70
Restricted Stock, Forfeited, Shares	(3,276)
Restricted Stock, Forfeited, Weighted-Average Grant-Date Fair Value, in dollars per share	$ 22.46
Restricted Stock, at end of period, Shares	258,770	315,305
Restricted Stock, at end of period, Weighted-Average Grant-Date Fair Value, in dollars per share	$ 22.31	$ 17.87
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Weighted-average grant date fair value	$ 21.27	$ 20.03	$ 16.75
Total fair value of restricted shares that vested (in thousands)	4,933,000	4,395,000	5,099,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options, Outstanding at beginning of period, Shares	1,343,666
Options, Outstanding at beginning of period, Weighted-Average Exercise Price, in dollars per share	$ 20.63
Options, Granted, Shares	0
Options, Granted, Weighted-Average Exercise Price, in dollars per share	$ 0.00
Options, Exercised, Shares	(345,426)
Options, Exercised, Weighted-Average Exercise Price, in dollars per share	$ 20.04
Options, Forfeited, Shares	(17,151)
Options, Forfeited, Weighted-Average Exercise Price, in dollars per share	$ 26.43
Options, Expired, Shares	(60,584)
Options, Expired, Weighted-Average Exercise Price, in dollars per share	$ 27.98
Options, Outstanding at end of period, Shares	920,505	1,343,666
Options, Outstanding at end of period, Weighted-Average Exercise Price, in dollars per share	$ 20.39	$ 20.63
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Outstanding at end of period, Aggregate Intrinsic Value	8,900,000
Options, Outstanding at end of period, Weighted-Average Remaining Contract Life (years)	2 years 9 months 29 days
Options, Outstanding at end of period, No intrinsic value	254,050,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Weighted-average grant date fair value options granted, in dollars per share	$ 0.00	$ 0.00	$ 0.00
Total fair value of options that vested	0	625,000	1,054,000
Total intrinsic value of options exercised	$ 2,473,000	$ 2,721,000	$ 6,356,000