|
Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data |
May 31, 2011
|
Aug. 31, 2010
|
|---|---|---|
| Current assets: | Â | Â |
| Allowance for collection losses | $ 25,964 | $ 29,721 |
| Stockholders' equity: | Â | Â |
| Common stock, par value | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 200,000,000 | 200,000,000 |
| Common stock, shares issued | 129,060,664 | 129,060,664 |
| Common stock, shares outstanding | 115,435,601 | 114,325,349 |
| Treasury stock, shares | 13,625,063 | 14,735,315 |