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Derivative Instruments (Tables)
 6 Months Ended
May 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Outstanding Foreign Currency Forward Contracts
The table below details outstanding foreign currency forward contracts where the notional amount is determined using contract exchange rates (in thousands):
 
 
May 31, 2014
 
November 30, 2013
 
Notional Value
 
Fair Value
 
Notional Value
 
Fair Value
Forward contracts to sell U.S. dollars
$
24,324

 
$
(42
)
 
$
26,016

 
$
79

Forward contracts to purchase U.S. dollars
10,747

 
(110
)
 
22,483

 
92

Total
$
35,071

 
$
(152
)
 
$
48,499

 
$
171