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Other comprehensive income (loss) and accumulated other comprehensive items (Tables)
 3 Months Ended
Mar. 31, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Summary of other comprehensive income (loss) and the changes in accumulated other comprehensive items
The following tables summarize other comprehensive income (loss) and the changes in accumulated other comprehensive items for the three months ended March 31, 2017:

 
 
Unrealized
Gains/(Losses)
On
Marketable
Securities, net
of tax
 
Foreign
Currency
Translation
 
Total
Accumulated
Other
Comprehensive
Items
Balance at December 31, 2016
 
$
(203
)
 
$
(1,282
)
 
$
(1,485
)
Other comprehensive (loss) income before reclassifications
 
(22
)
 
631

 
609

Amounts reclassified from other comprehensive items
 
—

 
—

 
—

Other comprehensive (loss) income
 
(22
)
 
631

 
609

Balance at March 31, 2017
 
$
(225
)
 
$
(651
)
 
$
(876
)