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Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
May 31, 2017
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, 2017 (in thousands):

 
Foreign Currency Translation Adjustment
 
Unrealized Gains (Losses) on Investments
 
Accumulated Other Comprehensive Loss
Balance, December 1, 2016
$
(28,425
)
 
$
(136
)
 
$
(28,561
)
Other comprehensive loss before reclassifications, net of tax
5,371

 
78

 
5,449

Balance, May 31, 2017
$
(23,054
)
 
$
(58
)
 
$
(23,112
)