Accumulated Other Comprehensive Loss (Tables)
 9 Months Ended
Sep. 30, 2016
Equity [Abstract]  
Components of Accumulated Other Comprehensive Income (Loss)
The components of accumulated other comprehensive loss were as follows (in thousands):
 
September 30, 2016
 
December 31, 2015
Foreign currency translation adjustments
$
(3,524
)
 
$
(2,119
)
Unrealized loss on investments
—

 
(29
)
    Total accumulated other comprehensive loss
$
(3,524
)
 
$
(2,148
)