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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Schedule of Changes in Accumulated Other Comprehensive Income
The following table summarizes the changes in accumulated balances of other comprehensive loss, net of tax:

 
Foreign currency
 
Change in unrealized gains on available-for-sale securities
 
Total
 
(in thousands)
Balances as of December 31, 2014
$
(4,615
)
 
$
169

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

 
(204
)
 
(204
)
Net increase in other comprehensive loss
(37,887
)
 
(975
)
 
(38,862
)
Balances as of December 31, 2015
$
(42,502
)
 
$
(806
)
 
$
(43,308
)
Other comprehensive (loss) income before reclassifications
(5,464
)
 
310

 
(5,154
)
Amounts reclassified from accumulated other comprehensive (loss)income
—

 
(103
)
 
(103
)
Net (increase) decrease in other comprehensive loss
(5,464
)
 
207

 
(5,257
)
Balances as of December 31, 2016
$
(47,966
)
 
$
(599
)
 
$
(48,565
)