Condensed Consolidated Statements of Operations (Parenthetical) - $ / shares		3 Months Ended			6 Months Ended
		Oct. 31, 2016		Oct. 31, 2015	Oct. 31, 2016		Oct. 31, 2015
Diluted	[1]	$ 0.01		$ 0.07	$ 0.07		$ 0.16
Class B Common Shares
Diluted		$ 0.01	[2]	$ 0.08	$ 0.07	[2]	$ 0.16

[1] Basic per share amounts are the same for Class A and Class B shares. Diluted per share amounts for Class A shares are shown above. Diluted earnings per share for Class B shares under the two-class method are $0.01 and $0.08 for the three months ended October 31, 2016 and 2015, and $0.07 and $0.16 for the six months ended October 31, 2016 and 2015, respectively. See Note D to the Condensed Consolidated Financial Statements.

[2] Amounts adjusted for rounding