Stock Purchase Plans (Share-based Compensation Arrangement By Share-based Payment Award, Options, Vested And Expected To Vest, Outstanding And Exercisable) (Details) (USD $)	12 Months Ended
Dec. 31, 2013
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable	32,279
Price Range, Upper Range Limit	$ 15.24
Weighted Average Exercise Price	$ 15.24
Weighted Average Remaining Life (years)	6 months
ISOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable	55,825
Weighted Average Exercise Price	$ 24.21
Weighted Average Remaining Life (years)	2 years 10 months 24 days
ISOP [Member] \| $16.11 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable	10,200
Price Range, Upper Range Limit	$ 16.11
Weighted Average Exercise Price	$ 16.11
Weighted Average Remaining Life (years)	5 years 2 months 12 days
ISOP [Member] \| $23.77 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable	14,925
Price Range, Upper Range Limit	$ 23.77
Weighted Average Exercise Price	$ 23.77
Weighted Average Remaining Life (years)	4 years 1 month 6 days
ISOP [Member] \| $24.92-$27.68 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable	30,700
Price Range, Lower Range Limit	$ 24.92
Price Range, Upper Range Limit	$ 27.68
Weighted Average Exercise Price	$ 27.11
Weighted Average Remaining Life (years)	1 year 6 months

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c), d(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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

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

+ Details

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

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

+ Details

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

+ Details

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