|
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)
|
Apr. 30, 2011
|
Jul. 31, 2010
|
|---|---|---|
| Stockholders' investment: | Â | Â |
| Treasury stock, shares, Class A nonvoting common stock | 1,724,535 | 2,175,771 |
|
Class A Nonvoting Common Stock
|
 |  |
| Stockholders' investment: | Â | Â |
| Common stock, shares issued | 51,261,487 | 51,261,487 |
| Common stock, shares outstanding | 49,226,952 | 48,875,716 |
|
Class B voting common stock
|
 |  |
| Stockholders' investment: | Â | Â |
| Common stock, shares issued | 3,538,628 | 3,538,628 |
| Common stock, shares outstanding | 3,538,628 | 3,538,628 |