Condensed Consolidated Statements of Operations (Parenthetical) - $ / shares		3 Months Ended
		Jul. 31, 2017	Jul. 31, 2016
Diluted	[1]	$ 0.09	$ 0.06
Class B Common Shares
Diluted	[2]	$ 0.09	$ 0.06

[1] Basic per share amounts are the same for Class A and Class B Common Shares. Diluted per share amounts for Class A Common Shares are shown above. Diluted earnings per share for Class B Common Shares under the two-class method are $0.09 and $0.06 for the three months ended July 31, 2017 and 2016, respectively. See Note D to the Condensed Consolidated Financial Statements.

[2] Amounts adjusted for rounding