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Cash Dividends	12 Months Ended
Cash Dividends	Apr. 30, 2013
Cash and Cash Equivalents [Abstract]
CASH DIVIDENDS	CASH DIVIDENDS We paid total cash dividends per share of $1.49, $0.89, and $4.98 during 2011, 2012, and 2013, respectively. Those amounts included special cash dividends per share of $0.67 in 2011 and $4.00 in 2013. The remaining amounts consisted of regular quarterly cash dividends.