Annual report pursuant to Section 13 and 15(d)

Provision Benefit For Domestic And Foreign Income Taxes (Detail)

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Provision Benefit For Domestic And Foreign Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2011
Current income taxes:      
Federal $ 4,100 $ 4,173 $ 7,606
State 1,237 1,609 5,714
Foreign 8,759 12,670 11,826
Current provision for income taxes 14,096 18,452 25,146
Deferred income taxes:      
Federal (423) 7,281 (2,442)
State 1,895 3,508 830
Foreign 1,069 (890) 9,158
Deferred provision for income taxes 2,541 9,899 7,546
Total provision for income taxes $ 16,637 $ 28,351 $ 32,692