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Special Dividend	9 Months Ended
Feb. 28, 2013
Special Dividend [Abstract]
Special Dividend	5. Special Dividend On December 6, 2012, the Company’s Board of Directors approved a special cash dividend of $1.00 per share of Common Stock and $0.90909 per share of Class B Common Stock, which was paid on December 28, 2012. The Board also accelerated the next two quarterly cash dividends totaling $0.17 per share of Common Stock and $0.15454 per share of Class B Common Stock that would have been paid in February and May of 2013 to the December payment date. The total combined dividend payment made on December 28, 2012 was $30,924,000.

Special Dividend

9 Months Ended

Feb. 28, 2013

5. Special Dividend

On December 6, 2012, the Company’s Board of Directors approved a special cash dividend of $1.00 per share of Common Stock and $0.90909 per share of Class B Common Stock, which was paid on December 28, 2012. The Board also accelerated the next two quarterly cash dividends totaling $0.17 per share of Common Stock and $0.15454 per share of Class B Common Stock that would have been paid in February and May of 2013 to the December payment date. The total combined dividend payment made on December 28, 2012 was $30,924,000.