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Note H - Income Taxes (Details) - Provision for Income Taxes (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2012
Provision for income taxes      
Current $ 15,466 $ 17,045 $ 16,476
Deferred (2,923) 1,446 3,316
$ 12,543 $ 18,491 $ 19,792