v3.3.1.900

INVESTMENTS: (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2013
Net Realized and Unrealized Gain (Loss) on Trading Securities [Abstract] |  |  |
Gains on trading investments | $ 50 | $ 397 | $ 1,868
Short-term Investments [Member] |  |  |
Gain (Loss) on Investments [Line Items] |  |  |
Trading securities, cost basis | 0 | 1,614 |
Trading securities, unrealized gains | 0 | 373 |
Trading securities, carrying value | 0 | 1,987 |
Held-to-maturity securities, cost basis | 5,546 | 5,141 |
Held-to-maturity securities, unrealized gains | 0 | 0 |
Held-to-maturity securities, carrying value | 5,546 | 5,141 |
Short-term investments, cost basis | 5,546 | 6,755 |
Short-term investments, unrealized gains | 0 | 373 |
Short-term investment, carrying value | 5,546 | 7,128 |
Other Long-term Investments [Member] | Other Assets [Member] |  |  |
Gain (Loss) on Investments [Line Items] |  |  |
Available-for-sale securities, cost basis | 837 | 843 |
Available-for-sale securities, unrealized gains | 1,073 | 897 |
Available-for-sale securities, carrying value | 1,910 | 1,740 |
Cost-method investments, cost basis | 4,555 | 4,578 |
Cost-method investments, unrealized gains | 0 | 0 |
Cost-method investments, carrying value | $ 4,555 | $ 4,578 |

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