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Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Feb. 28, 2015
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in accumulated balances of other comprehensive loss during the three months ended February 28, 2015 (in thousands):

 
Foreign Currency Translation Adjustment
 
Unrealized Gains (Losses) on Investments
 
Accumulated Other Comprehensive Loss
Balance, December 1, 2014
$
(13,733
)
 
$
7

 
$
(13,726
)
Other comprehensive income before reclassifications, net of tax
(5,478
)
 
(2
)
 
(5,480
)
Balance, February 28, 2015
$
(19,211
)
 
$
5

 
$
(19,206
)