| Schedule of carrying amount of investments |
The carrying amount of the Company’s investments is shown in the table below: | | | | | | | | | | | | | | | | | | | | | | | | | | May 31, 2013 | | November 30, 2012 | | Cost Basis | | Unrealized
Gains | | Carrying
Value | | Cost Basis | | Unrealized Gains | | Carrying
Value | Short-term: | | | | | | | | | | | | Trading securities | $ | 3,688 |
| | $ | 508 |
| | $ | 4,196 |
| | $ | 5,636 |
| | $ | 73 |
| | $ | 5,709 |
| Available-for-sale securities | — |
| | 45 |
| | 45 |
| | — |
| | 44 |
| | 44 |
| Held-to-maturity investments | 8,557 |
| | — |
| | 8,557 |
| | 8,297 |
| | — |
| | 8,297 |
| Cost method securities | 1,744 |
| | — |
| | 1,744 |
| | 1,883 |
| | — |
| | 1,883 |
| | $ | 13,989 |
| | $ | 553 |
| | $ | 14,542 |
| | $ | 15,816 |
| | $ | 117 |
| | $ | 15,933 |
| Long-term investments in other assets: | | | | | | | | | | | | Available-for-sale securities | $ | 915 |
| | $ | 176 |
| | $ | 1,091 |
| | $ | 1,095 |
| | $ | 22 |
| | $ | 1,117 |
| Cost-method investments | 4,983 |
| | — |
| | 4,983 |
| | 3,313 |
| | — |
| | 3,313 |
|
|