Stock-Based Compensation (Summary Of Options Outstanding) (Details) (USD $)	12 Months Ended
Mar. 31, 2015
Number Outstanding	35,090
Weighted Average Exercise Price	$ 33.51
Weighted Remaining Contractual Life (years)	3 years 6 months
Range One [Member]
Ranges of Exercise Prices, Lower Limit	$ 15.08
Ranges of Exercise Prices, Upper Limit	$ 16.33
Number Outstanding	18,090
Weighted Average Exercise Price	$ 16.19
Weighted Remaining Contractual Life (years)	9 months 18 days
Range Two [Member]
Ranges of Exercise Prices, Lower Limit	$ 31.27
Ranges of Exercise Prices, Upper Limit	$ 42.45
Number Outstanding	5,000
Weighted Average Exercise Price	$ 37.12
Weighted Remaining Contractual Life (years)	3 years 9 months 18 days
Range Three [Member]
Ranges of Exercise Prices, Lower Limit	$ 51.04
Ranges of Exercise Prices, Upper Limit	$ 67.69
Number Outstanding	12,000
Weighted Average Exercise Price	$ 58.11
Weighted Remaining Contractual Life (years)	7 years 6 months

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.

Reference 1: 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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)

-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 could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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)(i)-(ii)

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

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- Definition

Weighted average remaining contractual term of outstanding stock 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 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

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