Stock Based Compensation (Summary Of Activity For Stock Awards And Summary Of RSU Activity And Related Information) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards Granted (in shares)	4,470	6,708
Awards Vested (in shares)	(4,470)	(6,708)
Awards Granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 26.80	$ 17.89
Awards Vested, Weighted Average Grant Date Fair Value (in dollars per share)	$ 26.80	$ 17.89
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested - Beginning of Period (in shares)	131,100
Awards Granted (in shares)	42,650
Awards Exercised (in shares)	(48,849)
Awards Forfeited/Cancelled (in shares)	(25,639)
Non-vested - End of Period (in shares)	114,400
Non-vested, Weighted Average Grant Date Fair Value - Beginning of Period (in dollars per share)	$ 18.77
Awards Granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 24.99
Awards Exercised, Weighted Average Grant Date Fair Value (in dollars per share)	$ 24.97
Awards Forfeited/Cancelled, Weighted Average Grant Date Fair Value (in dollars per share)	$ 24.97
Non-vested, Weighted Average Grant Date Fair Value - End of Period (in dollars per share)	$ 22.07
Absolute Performance Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards Granted (in shares)	15,138
Awards Granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 16.63

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

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

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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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

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-Topic 718

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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

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-SubTopic 10

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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.

+ References

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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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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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- 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

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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