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INVESTMENTS: Long term investments (Details) (Other Long-term Investments [Member], USD $)
In Thousands, unless otherwise specified |
May 31, 2013
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Nov. 30, 2012
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|---|---|---|
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Other Long-term Investments [Member]
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| Investment [Line Items] | ||
| Available-for-sale Securities, Cost Basis | $ 915 | $ 1,095 |
| Available-for-sale Securities, Gross Unrealized Gain (Loss) | 176 | 22 |
| Available-for-sale Securities, Noncurrent, Carrying Value | 1,091 | 1,117 |
| Long term cost investment, cost basis | 4,983 | 3,313 |
| Unrealized Gain (Loss) position for Cost Method Investments | 0 | 0 |
| Cost-method Investments, Carrying Value | $ 4,983 | $ 3,313 |