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Basis of Condensed Consolidated Financial Statements Comprehensive Income (Loss) Table (Tables)
 3 Months Ended
Mar. 31, 2014
Comprehensive Income (Loss) [Abstract]  
Comprehensive Income (Loss) [Policy Text Block]
The following table shows the components of accumulated other comprehensive loss, net of taxes as of March 31, 2014 and December 31, 2013:

 
2014
 
2013
Cumulative foreign currency translation
$
(40,285
)
 
$
(50,787
)
Cumulative supplemental benefit plans
(633
)
 
(568
)
Net unrecognized losses on interest rate swap
—

 
(2,482
)
Net unrealized gains on marketable securities
318

 
248

Accumulated other comprehensive loss
$
(40,600
)
 
$
(53,589
)