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Comprehensive Income (Tables) | 3 Months Ended
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Jul. 31, 2015
Components Of Accumulated Other Comprehensive Income (Loss) | The components of accumulated other comprehensive loss were as follows:
|  | July 31, 2015 |  |  | April 30, 2015 |
|  | (in thousands) |
Foreign currency translation adjustments |  | $ | (36,551 | ) |  | $ | (20,919 | )
Deferred compensation and pension plan adjustments, net of tax |  |  | (19,261 | ) |  |  | (19,708 | )
Unrealized gains on marketable securities, net of tax |  |  | — |  |  |  | 4 |
Accumulated other comprehensive loss, net |  | $ | (55,812 | ) |  | $ | (40,623 | )
Changes in Each Component of Accumulated Other Comprehensive Income (Loss) | The following table summarizes the changes in each component of accumulated other comprehensive income (loss) for the three months ended July 31, 2015:
|  | Foreign Currency Translation |  |  | Deferred Compensation and Pension Plan (1) |  |  | Unrealized Gains (Losses) on Marketable Securities |  |  | Accumulated Other Comprehensive Income (Loss) |
|  | (in thousands) |
Balance as of April 30, 2015 |  | $ | (20,919 | ) |  | $ | (19,708 | ) |  | $ | 4 |  |  | $ | (40,623 | )
Unrealized losses arising during the period |  |  | (15,632 | ) |  |  | — |  |  |  | (4 | ) |  |  | (15,636 | )
Reclassification of realized net losses to net income |  |  | — |  |  |  | 447 |  |  |  | — |  |  |  | 447 |
Balance as of July 31, 2015 |  | $ | (36,551 | ) |  | $ | (19,261 | ) |  | $ | — |  |  | $ | (55,812 | )
The following table summarizes the changes in each component of accumulated other comprehensive income (loss) for the three months ended July 31, 2014:
|  | Foreign Currency Translation |  |  | Deferred Compensation and Pension Plan (1) |  |  | Unrealized Gains (Losses) on Marketable Securities |  |  | Accumulated Other Comprehensive Income (Loss) |
|  | (in thousands) |
Balance as of April 30, 2014 |  | $ | 15,604 |  |  | $ | (18,006 | ) |  | $ | 14 |  |  | $ | (2,388 | )
Unrealized losses arising during the period |  |  | (3,680 | ) |  |  | — |  |  |  | (6 | ) |  |  | (3,686 | )
Reclassification of realized net losses to net income |  |  | — |  |  |  | 487 |  |  |  | — |  |  |  | 487 |
Balance as of July 31, 2014 |  | $ | 11,924 |  |  | $ | (17,519 | ) |  | $ | 8 |  |  | $ | (5,587 | )
(1) | The tax effects on the reclassifications of realized net losses was $0.3 million for both the three months ended July 31, 2015 and 2014.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e526-108580 + Details
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