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Note 2 - Cash, Cash Equivalents and Short-term Investments (Detail) - Investment Securities in a Continuous Loss Position (USD $)
In Thousands, unless otherwise specified |
Nov. 30, 2011
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|---|---|
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Corporate Debt Securities [Member]
|
|
| Available-for-sale: | |
| Fair Value | $ 1,874 |
| Unrealized Loss | (29) |
|
Total [Member]
|
|
| Available-for-sale: | |
| Fair Value | 1,874 |
| Unrealized Loss | $ (29) |