|
Note 2 - Cash, Cash Equivalents and Short-term Investments (Detail) - Gross Realized Gains and Losses From Sales of Available-For-Sale Securities (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Nov. 30, 2011
|
Nov. 30, 2010
|
|
| Proceeds | $ 5,617 | $ 25,624 |
| Realized gains | 1 | 73 |
| Realized losses | $ 0 | $ 0 |