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Other Income (Expense) (Tables)
 12 Months Ended
Dec. 31, 2012
Other Income (Expense) [Abstract]  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
Other income (expense) is comprised of the following:
 
Year Ended December 31,
 
2010

2011

2012
Foreign currency exchange gains (losses), net
$
(255
)

$
846


$
(482
)
Realized gains on sales of marketable securities, net
—


1


—

Total other income (expense)
$
(255
)

$
847


$
(482
)