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Subsequent Events	12 Months Ended
Subsequent Events	Apr. 30, 2015
Subsequent Events	(11) Subsequent Events On May 13, 2015, our Board of Directors declared a quarterly cash dividend of $0.10 per share of our Class A and Class B common stock. The cash dividend is payable on August 21, 2015 to Class A and Class B shareholders of record at the close of business on August 7, 2015.