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Comprehensive Income (Loss) (Tables)
 3 Months Ended
Mar. 31, 2019
Stockholders' Equity Note [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table shows the components of accumulated other comprehensive loss for the three months ended March 31, 2019 and 2018, respectively, net of tax effects: 
 
 
Three Months Ended March 31,
Accumulated Other Comprehensive Loss:
 
2019
 
2018
 
 
 
 
 
Foreign currency translation adjustment:
 
 

 
 

Beginning balance
 
$
(23,621
)
 
$
(23,202
)
Net other comprehensive (loss) income
 
(161
)
 
249

Balance at March 31,
 
$
(23,782
)
 
$
(22,953
)
 
 
 
 
 
Unrealized gain (loss) on marketable securities, net
 
 

 
 

Beginning balance
 
$
205

 
$
(64
)
Net other comprehensive income (loss), net of ($18) and ($59) tax, respectively
 
374

 
(238
)
Balance at March 31,
 
$
579

 
$
(302
)
Accumulated other comprehensive loss at March 31,
 
$
(23,203
)
 
$
(23,255
)