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Accumulated Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss

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, 2015
$
(42,502
)
 
$
(806
)
 
$
(43,308
)
Other comprehensive income (loss) 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
)
Other comprehensive income before reclassifications
27,409

 
728

 
28,137

Amounts reclassified from accumulated other comprehensive (loss) income
—

 
(129
)
 
(129
)
Net decrease in other comprehensive loss
27,409

 
599

 
28,008

Balances as of December 31, 2017
$
(20,557
)
 
$
—

 
$
(20,557
)


The amounts reclassified from accumulated other comprehensive loss were immaterial for the years ended December 31, 2017 and 2016.