Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
May. 31, 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 six months ended May 31, 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 (loss) income before reclassifications, net of tax
(8,154
)
 
(35
)
 
(8,189
)
Balance, May 31, 2015
$
(21,887
)
 
$
(28
)
 
$
(21,915
)