CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)	Oct. 31, 2014	Jul. 31, 2014
Class A nonvoting common stock
Common stock, shares issued	51,261,487	51,261,487
Common stock, shares outstanding	47,714,986	47,704,196
Treasury stock, shares	3,546,501	3,477,291
Class B voting common stock
Common stock, shares issued	3,538,628	3,538,628
Common stock, shares outstanding	3,538,628	3,538,628