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Accumulated Other Comprehensive (Loss) Income (Tables)
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Schedule of Changes in Accumulated Other Comprehensive Income
The following table summarizes the changes in accumulated balances of other comprehensive (loss) income, net of tax:

 
Foreign currency
 
Change in unrealized gains on available-for-sale securities
 
Total
 
(in thousands)
Balance as of December 31, 2013
$
3,153

 
$
422

 
$
3,575

Other comprehensive (loss) income before reclassifications
(7,768
)
 
337

 
(7,431
)
Amounts reclassified from accumulated other comprehensive (loss)income
—

 
(590
)
 
(590
)
Net decrease in other comprehensive (loss) income
(7,768
)
 
(253
)
 
(8,021
)
Balance as of December 31, 2014
$
(4,615
)
 
$
169

 
$
(4,446
)
Other comprehensive (loss) income before reclassifications
(37,887
)
 
(771
)
 
(38,658
)
Amounts reclassified from accumulated other comprehensive (loss)income
—

 
(204
)
 
(204
)
Net decrease in other comprehensive (loss) income
(37,887
)
 
(975
)
 
(38,862
)
Balance as of December 31, 2015
$
(42,502
)
 
$
(806
)
 
$
(43,308
)