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Accumulated Other Comprehensive Loss
 9 Months Ended
Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Comprehensive Income (Loss) Accumulated Other Comprehensive Loss
The components of Accumulated other comprehensive loss, net of tax, are as follows: 
 
Foreign
Currency
Translation
Adjustments
 
Unrealized
Gains (Losses)
on Investments
 
Accumulated Other Comprehensive Loss
Balance, January 1, 2017
$
(37,119
)
 
$
(836
)
 
$
(37,955
)
 
 
 
 
 
 
Other comprehensive gain before reclassifications
17,028

 
435

 
17,463

Amounts reclassified from accumulated other comprehensive loss
—

 
194

 
194

Net current-period other comprehensive gain
17,028

 
629

 
17,657

 
 
 
 
 
 
Balance, September 30, 2017
$
(20,091
)
 
$
(207
)
 
$
(20,298
)