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Capital Stock and Changes in Capital Accounts	12 Months Ended
	Apr. 30, 2018
Capital Stock and Changes in Capital Accounts [Abstract]
Capital Stock and Changes in Capital Accounts	Note 17 – Capital Stock and Changes in Capital Accounts Each share of our Class B Common Stock is convertible into one share of Class A Common Stock. The holders of Class A stock are entitled to elect 30% of the entire Board of Directors and the holders of Class B stock are entitled to elect the remainder. On all other matters, each share of Class A stock is entitled to one tenth of one vote and each share of Class B stock is entitled to one vote. During fiscal year 2017, our Board of Directors approved an additional share repurchase program of four million shares of Class A or B Common Stock. We repurchased in fiscal year 2018 713,177 Class A shares at an average price of $55.65 per share. In fiscal year 2017 we repurchased 953,188 shares, which included 952,667 Class A shares and 521 Class B shares at an average price of $52.80 per share. As of April 30, 2018, we had authorization from our Board of Directors to purchase up to 3,080,471 additional shares.

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- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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