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DERIVATIVE INSTRUMENTS: (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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May 31, 2013
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| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of fair value of foreign exchange forward contracts | The following table summarizes the fair value of the Company’s foreign exchange forward contracts as of May 31, 2013 and November 30, 2012:
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