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Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
May 31, 2013
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in accumulated balances of other comprehensive loss during the six months ended May 31, 2013 (in thousands):

 
Foreign Currency Translation Adjustment
 
Unrealized Gains (Losses) on investments
 
Accumulated Other Comprehensive Loss
Balance, December 1, 2012
$
(8,183
)
 
$
(2,581
)
 
$
(10,764
)
Other comprehensive income (loss) before reclassifications, net of tax
(2,462
)
 
87

 
(2,375
)
Amounts reclassified from accumulated other comprehensive income (loss)
—

 
—

 
—

Balance, May 31, 2013
$
(10,645
)
 
$
(2,494
)
 
$
(13,139
)