Average closing price, number of days trailing

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- Definition

Disbursements of management stock purchase plan.

+ References

No definition available.

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- Definition

Percentage of performance stock units earned during performance period based on the terms of the performance stock unit award.

+ References

No definition available.

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- Definition

Maximum number of shares originally approved, net of subsequent amendments and adjustments, for awards of Incentive Stock Options under the equity-based compensation plan.

+ References

No definition available.

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- Definition

Number of restricted stock units credited to participant accounts.

+ References

No definition available.

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- Definition

Percentage of accrues interest.

+ References

No definition available.

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- Definition

Performance stock units earned

+ References

No definition available.

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- Definition

Performance stock units target awards

+ References

No definition available.

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- Definition

Age at 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.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Grant Date Fair Value

+ References

No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, 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

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.

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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 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

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)(i)-(ii)

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

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- Definition

Weighted average remaining contractual term for equity-based awards excluding 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=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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Equity-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
Equity-Based Compensation (Narrative) (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Typical vesting period, in years	4 years
MSPP company matching portion, vesting age	60 years
Number of restricted stock units credited to participant accounts	596,683		647,371
Disbursements of MSPP		$ 395,000
Former President and Chief Operating Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Disbursements of MSPP	1,475,000
2005 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares that may be issued under the Plan	3,000,000
Maximum number of shares that may be issued in connection with grants of incentive stock options and rights	900,000
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Years of service	5 years
Average closing price, number of days trailing	90 days
Management Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average closing price, number of days trailing	200 days
Accrues interest	2.00%
Number of restricted stock units credited to participant accounts	74,549	108,043
Weighted average fair value of per unit awarded	15.24		15.68
Minimum \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock unit vesting period	1 year
Maximum \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock unit vesting period	3 years
Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units credited to participant accounts	76,580		62,455
Awarded January 2013 \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock units outstanding	237,000			304,000
Performance stock unit grant-date fair value				4,123,000
Percentage of target performance stock units earned			50.00%
Performance stock units earned			114,000
Performance stock units target awards			237,000
Awarded January 2014 \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock units outstanding					212,000
Performance stock unit grant-date fair value					3,914,000
Awarded June 2014 \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock units outstanding	19,000
Performance stock unit grant-date fair value	319,000
Awarded January 2015 \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock units outstanding						219,000
Performance stock unit grant-date fair value						$ 4,039,000