The following table summarizes the valuation of the Company’s investments and financial instruments that are measured at fair value on a recurring basis: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of May 31, 2013 | | As of November 30, 2012 | | Total | | Fair value measurement category | | Total | | Fair value measurement category | | Level 1 | | Level 2 | | Level 3 | | Level 1 | | Level 2 | | Level 3 | Assets: | | | | | | | | | | | | | | | | Cash equivalents | $ | 118,518 |
| | $ | 118,518 |
| | $ | — |
| | $ | — |
| | $ | 95,074 |
| | $ | 95,074 |
| | $ | — |
| | $ | — |
| Trading securities | 4,196 |
| | 4,196 |
| | — |
| | — |
| | 5,709 |
| | 5,709 |
| | — |
| | — |
| Available-for-sale securities in short-term investments | 45 |
| | 45 |
| | — |
| | — |
| | 44 |
| | 44 |
| | — |
| | — |
| Available-for-sale securities in other assets | 1,091 |
| | 1,091 |
| | — |
| | — |
| | 1,117 |
| | 1,117 |
| | — |
| | — |
| Forward foreign currency exchange contracts | 2,487 |
| | — |
| | 2,487 |
| | — |
| | 1,292 |
| | — |
| | 1,292 |
| | — |
| Liabilities: | | | | | | | | | | | | | | | | Forward foreign currency exchange contracts | $ | 215 |
| | $ | — |
| | $ | 215 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Acquisition-related contingent consideration | 2,070 |
| | — |
| | — |
| | 2,070 |
| | 2,611 |
| | — |
| | — |
| | 2,611 |
|
|