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Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income, Net of Related Tax Effects
Accumulated other comprehensive income, net of related tax effects, is as follows (in thousands):
 
 
December 31,
 
 
2012
 
2011
 
2010
Unrealized holding gains (losses) on available-for-sale securities
 
$
(9
)
 
$
(2
)
 
$
36

Unrealized holding gains (losses) on derivative transactions
 
2,505

 
7,250

 
(1,671
)
Foreign currency translation adjustments
 
44,167

 
39,649

 
48,350

Accumulated other comprehensive income
 
$
46,663

 
$
46,897

 
$
46,715