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Shareholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Components of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are as follows:
 
March 31,
2017
 
December 31,
2016
Unrealized loss on investments
$
(109
)
 
$
(89
)
Loss on foreign currency translation adjustments
(32,858
)
 
(36,113
)
Total accumulated other comprehensive loss
$
(32,967
)
 
$
(36,202
)