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Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands	Jul. 31, 2011	Apr. 30, 2011
Comprehensive Income
Foreign currency translation adjustments	$ 34,812	$ 35,639
Defined benefit pension adjustments, net of taxes	(10,014)	(10,014)
Unrealized gains (losses) on marketable securities, net of taxes	88	35
Accumulated other comprehensive income	$ 24,886	$ 25,660

X

- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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