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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jul. 31, 2012
Jul. 31, 2011
Net income $ 10,418 $ 15,411
Other comprehensive income:    
Foreign currency translation adjustments (9,859) (827)
Unrealized gains on marketable securities, net of taxes 27 53
Comprehensive income $ 586 $ 14,637