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Stockholders' Equity and Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2012
Stockholders' Equity and Accumulated Other Comprehensive Loss  
Schedule of components of accumulated other comprehensive loss, net of related taxes

 

 

December 31,

 

(Thousands of dollars)

 

2012

 

2011

 

2010

 

 

 

 

 

 

 

 

 

Cumulative foreign currency translation adjustment

 

$

(109,457

)

$

(93,669

)

$

(81,280

)

Unrealized gain (loss) on investments

 

2,232

 

(311

)

445

 

Unrealized loss on cash flow hedges

 

(113

)

-

 

-

 

Unrecognized pension cost

 

(64,206

)

(62,085

)

(43,072

)

 

 

 

 

 

 

 

 

Accumulated other comprehensive loss

 

$

(171,544

)

$

(156,065

)

$

(123,907

)