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Disclosure Of Compensation Related Costs, Share Based Payments (Tables)

6 Months Ended

Oct. 31, 2011

Disclosure Of Compensation Related Costs, Share Based Payments [Abstract]

Schedule Of Issuance Of Stock Option Plans

		Number of Shares			Weighted Average Exercise Price
Outstanding April 30, 2011		775,609		$	23.38
Granted		441,000			44.39
Exercised		(80,950)			20.28
Forfeited		(3,500)			36.19
Outstanding at October 31, 2011		1,132,159		$	31.75

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (c)(1)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

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

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