DERIVATIVE INSTRUMENTS: (Tables)
 6 Months Ended
May 31, 2014
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, 2014 and November 30, 2013:
  
 
 
Fair Value as of
 
Balance Sheet Line Item
 
May 31, 2014
 
November 30, 2013
Derivative instruments designated as hedging instruments:
 
 
 
 
 
Foreign exchange contracts designated as cash flow hedges
Other current liabilities
 
$
183

 
$
—

Derivative instruments not designated as hedging instruments:
 
 
 
 
 
Foreign exchange contracts
Other current assets
 
$
247

 
$
2,386

Foreign exchange contracts
Other current liabilities
 
1,899

 
80